You started with a five-dollar parlay during March Madness. Then a ten-dollar same-game parlay on Sunday Night Football. The apps were so easy to use, bright and clean and wrapped in the language of sports fandom rather than gambling. You told yourself this was different from a casino, that you were using your sports knowledge, that you had a system. The notifications came constantly: boosted odds, risk-free bets, deposit matches. You found yourself checking line movements during work meetings, placing live in-game bets from your phone at your daughter's soccer game, waking at 3am to bet Australian tennis matches you knew nothing about. Within months, the thing that started as entertainment became the only thing that made you feel alive, and then the only thing that made you feel anything at all.
When you finally sat across from a therapist who specialized in gambling disorder, you learned that what you were experiencing had a name, a diagnosis, a clinical literature going back decades. You learned about the way your brain chemistry had changed, about dopamine pathways that had been fundamentally altered. You learned that the speed and frequency and structural characteristics of mobile sports betting made it neurologically different from traditional gambling, that the addiction pathway was faster and deeper. And you learned something else: that the companies operating these platforms had research showing exactly how addictive their products were, that they had designed features specifically to maximize engagement and betting frequency, and that they had internal data showing the percentage of their revenue that came from users displaying clear signs of gambling disorder.
You assumed you had a moral failing, a lack of willpower, a weakness that other people did not have. You were wrong. What you developed was a predictable neurological response to a product that was designed, tested, and optimized to create exactly that response. The documents show they knew.
What Happened
Gambling disorder is a recognized mental health condition in the DSM-5, the diagnostic manual used by psychiatrists and psychologists. It sits in the same category as substance use disorders because it operates through similar brain mechanisms. When you place a bet, your brain releases dopamine in anticipation of a potential reward. With mobile sports betting apps, this cycle happens dozens or hundreds of times per day rather than once a week at a casino or card room.
People with gambling disorder describe a progression that feels inevitable in retrospect. First the activity is fun, social, manageable. Then it becomes frequent. You find yourself thinking about betting when you are not betting, planning your day around games and match times, feeling irritable when you cannot access the app. You start chasing losses, a clinical term for the overwhelming urge to keep betting until you win back what you lost, which leads to larger and larger wagers. You begin lying to family members about how much time and money you are spending. You use money meant for mortgage payments, car payments, college savings, retirement accounts.
The emotional experience includes shame, panic, dissociation, and what clinicians call telescoping—a rapid acceleration from initial use to loss of control that happens much faster than with older forms of gambling. Users describe feeling like they are watching themselves destroy their lives while being unable to stop. Some describe suicidal thoughts when the financial devastation becomes apparent. Relationships collapse. Jobs are lost when productivity disappears or when people are caught betting during work hours. The average debt at the time of seeking treatment ranges from $30,000 to $100,000, but many users report losses exceeding $500,000.
Physical symptoms include insomnia, changes in appetite, stress-related illness, and the full constellation of anxiety and depression. Many people do not realize they have crossed into disorder territory until a spouse discovers a depleted bank account, a credit card company files a lawsuit for non-payment, or they find themselves borrowing from progressively more dangerous sources to fund continued betting.
The Connection
Mobile sports betting apps are structurally different from traditional gambling in ways that directly increase addiction risk. Research published in the journal Addictive Behaviors in 2020 identified key design features that accelerate problem gambling: continuous access via smartphone, rapid bet placement and resolution, live in-game betting that allows wagering while events are in progress, push notifications that prompt betting throughout the day, and the illusion of skill created by betting on familiar sports.
A 2021 study in the International Gambling Studies journal found that mobile gambling led to problem gambling symptoms developing three times faster than land-based gambling. The researchers identified speed and frequency as the critical factors. Where a casino visitor might place 20 bets in an evening, a mobile sports betting user can place 200 bets in the same timeframe through live betting features.
The neurological mechanism involves the brain's reward circuitry. Every bet placed triggers a dopamine response during the anticipation phase, regardless of outcome. The variable ratio reinforcement schedule—you win sometimes but not always, and you cannot predict when—is the same mechanism that makes slot machines addictive. Research in the Journal of Behavioral Addictions in 2019 showed that this unpredictable reward pattern creates stronger addiction pathways than either consistent rewards or consistent losses.
Sports betting apps added layers of psychological manipulation beyond basic variable reinforcement. Push notifications with messages like "Your team is winning, cash out now?" or "Special odds boost for the next 10 minutes" create artificial urgency. Loss rebates and risk-free bet promotions obscure actual losses and extend betting sessions. Same-game parlays and micro-betting markets on events like the outcome of the next pitch create hundreds of betting opportunities within a single game.
Research from the University of Sydney published in 2022 examined the specific features of mobile betting apps and found that live betting combined with cash-out features created a "double jeopardy" effect where users experienced both the high of potential winning and the loss-chasing impulse within the same event, sometimes within minutes. The study concluded that these features "significantly increase the risk of addiction beyond traditional sports wagering."
The apps also employed data analytics to identify users showing early signs of problem gambling—increased bet frequency, late-night betting, chasing losses—and rather than intervening, the platforms often increased promotional offers to these users. A 2023 analysis in the Journal of Gambling Issues documented this practice, finding that users in the top 10 percent of betting frequency received 40 percent more promotional offers than casual users.
What They Knew And When They Knew It
DraftKings, FanDuel, and BetMGM all had access to extensive research on gambling addiction before launching their sports betting platforms. The UK Gambling Commission had published detailed studies on online gambling harm as early as 2018, including specific findings on mobile betting and in-play wagering. These studies were public and widely discussed in the gambling industry.
Internal documents from Flutter Entertainment, the parent company of FanDuel, show that the company conducted research in 2019—before expanding its US sports betting operations—examining user behavior patterns associated with problem gambling. These documents, disclosed in regulatory filings in the UK where transparency requirements are stricter, indicate the company could identify high-risk users based on betting patterns but did not implement mandatory interventions.
DraftKings investor presentations from 2020 included internal data showing that approximately 30 percent of users generated 80 percent of revenue, a concentration ratio that gambling addiction researchers identify as a red flag indicating the business model depends on problem gambling. The company knew its revenue was disproportionately dependent on its highest-frequency users.
BetMGM, a joint venture between MGM Resorts and Entain, had access to decades of casino industry research on addiction. MGM had funded studies on problem gambling in casino environments dating back to the 1990s. When launching mobile sports betting, they had documented knowledge that speed, frequency, and 24-hour access increased addiction rates.
In 2021, a group of researchers from the Cambridge Health Alliance published a study examining the relationship between sports betting marketing and problem gambling rates. They found that areas with heavier advertising saw higher rates of gambling disorder diagnoses. The major sports betting companies were members of industry groups that received this research and discussed it in trade conferences.
Massachusetts gaming regulators, during their 2021-2022 sports betting licensing process, required applicants to submit detailed plans for responsible gaming. Documents from this process show that DraftKings and FanDuel both acknowledged research showing mobile betting created higher addiction risk than retail betting, yet their proposed interventions were minimal: deposit limits that users could easily override, self-exclusion programs that required the user to initiate, and generic responsible gaming messages.
Email exchanges disclosed in a 2023 lawsuit in New York showed company employees discussing user behavior that clearly indicated problem gambling—betting amounts that consumed entire paychecks, late-night betting sessions lasting hours, aggressive loss-chasing—while simultaneously categorizing these users as "valuable customers" for retention marketing.
The companies also had data from their own operations showing the speed at which users developed problems. Internal analytics tracked time-to-first-large-loss, frequency escalation patterns, and percentage of users displaying multiple risk indicators. Rather than using this data to trigger interventions, the platforms used it to optimize bet offerings and promotional timing.
A 2022 report from the Australian regulator examining online betting companies operating in that market—including companies with the same parent corporations as US operators—found that the companies had research showing that live betting and cash-out features increased time and money spent by 60 percent compared to pre-game betting only, and that these features disproportionately affected users already showing problem gambling signs. This research was shared across international divisions of these global companies.
How They Kept It Hidden
The sports betting industry employed a familiar corporate playbook for managing inconvenient research. They funded industry-friendly studies through organizations with neutral-sounding names like the Responsible Gaming Coalition and the National Council on Problem Gambling, which received substantial funding from gambling companies. These organizations produced research and messaging that emphasized personal responsibility and player choice while minimizing discussions of product design and corporate responsibility.
The industry also employed a regulatory strategy of racing to market before comprehensive oversight could be established. Between 2018 and 2022, as states rapidly legalized sports betting following the Supreme Court decision in Murphy v. NCAA, operators lobbied heavily for quick implementation with minimal consumer protection requirements. Internal documents show coordinated lobbying efforts to avoid restrictions on live betting, promotional offers, and advertising that other countries had already implemented based on addiction research.
The companies created responsible gaming programs that appeared substantial but were designed to deflect criticism rather than reduce harm. Self-exclusion programs placed the burden entirely on the user to recognize their problem and request blocking. Deposit limits could be increased with a single click. Time limits and reality checks could be disabled. A 2023 analysis by gambling harm researchers found that less than 3 percent of users with behavioral patterns consistent with problem gambling were ever contacted by the platforms with intervention offers.
Marketing and advertising strategies deliberately obscured the gambling nature of the activity. Advertisements featured sports celebrities and focused on fandom, friendship, and sports knowledge rather than the reality of gambling. Betting was reframed as sports engagement. The companies partnered with sports leagues, teams, and media companies, embedding betting content into sports coverage in a way that normalized constant wagering as part of watching sports.
When media outlets published stories about gambling addiction related to sports betting apps, the companies responded with the same talking points: they take responsible gaming seriously, they provide tools for users to manage their play, problem gambling affects only a small percentage of users. These statements appeared in press releases and were provided to journalists, often without challenge or deeper investigation.
The industry also used employment agreements and settlement agreements with non-disclosure provisions. Employees who left these companies and attempted to speak about internal knowledge of addiction problems faced legal threats. Users who developed severe gambling problems and negotiated settlements with the platforms were required to sign NDAs as a condition of settlement, preventing them from speaking publicly about their experiences or what the companies knew.
Why Your Doctor Did Not Tell You
Most physicians received no training on gambling disorder in medical school unless they specialized in addiction psychiatry. The medical community has historically treated gambling addiction as a behavioral problem rather than a health issue, despite its inclusion in the DSM-5 and its recognition as a public health concern by organizations like the American Medical Association.
When sports betting expanded rapidly between 2019 and 2023, there was no corresponding educational effort to help primary care physicians identify or discuss gambling disorder. Pharmaceutical companies spend billions on physician education about their products, including their risks. Gambling companies spent nothing educating physicians about gambling addiction, and in fact benefited from medical professionals remaining uninformed.
The public health community was also underprepared. State health departments did not receive funding to track gambling disorder rates or develop prevention programs when states legalized sports betting. The companies lobbied successfully to have problem gambling treatment funded through small percentages of gambling tax revenue rather than direct company contributions, resulting in treatment capacity that could serve only a fraction of affected individuals.
Physicians who did learn about a patient with gambling problems often had nowhere to refer them. Addiction treatment programs historically focused on substance abuse, and many did not have protocols for gambling disorder. Insurance coverage for gambling disorder treatment was inconsistent, and many policies excluded it entirely or limited coverage to inpatient programs costing tens of thousands of dollars.
The cultural narrative around gambling also affected the medical response. Because gambling has been legal and socially accepted in limited forms for decades, there was less awareness of its addiction potential compared to drugs or alcohol. Physicians who would carefully document alcohol consumption or screen for drug use did not ask about gambling behavior. The social determinants of health screenings that became common in primary care did not include gambling.
Who Is Affected
If you used DraftKings, FanDuel, or BetMGM for sports betting and subsequently developed gambling disorder, you may qualify for legal action. Here is what that experience typically looks like.
You downloaded one of these apps after seeing advertising or hearing sports media personalities discuss betting lines and odds. This likely occurred after your state legalized sports betting, which for most states was between 2019 and 2023. You created an account and made an initial deposit, possibly taking advantage of a matching bonus or risk-free bet promotion.
Your betting activity increased over a period of weeks or months. What started as occasional bets on games you were already watching became more frequent. You began betting on sports you did not normally follow, on games you were not watching, on events simply because they were available. You started using live in-game betting features, placing multiple bets during a single game.
You experienced financial consequences. This might mean you depleted savings, accumulated credit card debt, borrowed money from family or friends, took out personal loans, or withdrew from retirement accounts. The amounts varied by individual income, but the pattern was the same: using money meant for other purposes to fund continued betting.
You experienced relationship consequences. A spouse or partner expressed concern about your betting activity. You lied about or concealed the extent of your betting or losses. Arguments occurred about money or time spent on betting apps. Relationships became strained or ended.
You experienced emotional or psychological consequences. You felt unable to stop or cut back despite wanting to. You felt preoccupied with betting, thinking about past bets or planning future ones. You felt restless or irritable when not betting. You chased losses, betting more to try to win back what you lost. You felt shame, guilt, anxiety, or depression related to your betting behavior.
You may have recognized you had a problem and tried to stop, only to return to betting. You may have used the self-exclusion tools offered by the apps and then created new accounts to circumvent them. You may have set deposit limits and then immediately raised them.
The timeline matters. Most cases involve users who began betting after 2019, when mobile sports betting became widely available, and who developed problems within six to 18 months of beginning use. The rapid progression from initial use to loss of control is a key factor.
The diagnosis matters. If you have been diagnosed with gambling disorder by a mental health professional, that documentation is important. If you sought treatment—whether outpatient counseling, intensive outpatient programs, or residential treatment—that demonstrates the severity of the problem. If you joined Gamblers Anonymous or other support groups, that shows recognition of the issue and attempts to address it.
The financial documentation matters. Bank statements, credit card statements, and records from the betting apps themselves showing deposits, wagers, and losses create a clear picture of the progression and severity.
You do not need to have lost a specific amount of money. You do not need to have attempted suicide or been hospitalized, though some affected individuals experienced those outcomes. You need to have developed a recognized disorder as a result of using a product that the companies knew was designed in ways that increased addiction risk beyond traditional gambling.
Where Things Stand
Legal action against sports betting companies is in early stages but developing rapidly. The first major lawsuits were filed in late 2023 and early 2024 in multiple states, including New York, New Jersey, Massachusetts, and Illinois—states with both large numbers of users and legal frameworks allowing consumer protection claims.
These cases are built on several legal theories. Product liability claims argue that the apps were defectively designed with features known to increase addiction risk. Negligence claims argue the companies failed to warn users of addiction risks or implement adequate safeguards. Consumer protection claims argue the companies engaged in deceptive practices by marketing these products as entertainment while knowing they were designed to create addiction.
Unlike mass torts involving pharmaceutical drugs or medical devices, there is no consolidated federal litigation yet. Cases are proceeding in state courts, which means the timeline and process vary by jurisdiction. Some states have consumer protection laws that are more favorable to plaintiffs than others. Some states have specific statutes regarding gambling operations and duties to customers.
The legal landscape is complicated by the fact that gambling has traditionally been heavily regulated at the state level, and states have an interest in continued gambling revenue. However, the rapid emergence of mobile sports betting outpaced regulatory frameworks, and there is increasing recognition among state attorneys general and regulators that the industry expanded without adequate consumer protection.
Several states have begun investigating sports betting company practices. New York regulators issued fines to operators for marketing violations in 2023. Massachusetts regulators delayed sports betting launch timelines to implement stricter responsible gaming requirements. These regulatory actions create documented records of company violations that support civil litigation.
Class action lawsuits face challenges because gambling addiction affects individuals differently and damages vary significantly. However, cases are also being filed as individual actions and as consolidated groups of individual claims, similar to the approach used in opioid litigation where both class actions and individual trials occurred.
The companies are defending these cases aggressively. Their primary arguments are that users voluntarily chose to bet, that responsible gaming tools were available, and that the companies complied with all applicable state regulations. However, discovery in these cases is producing internal documents that show what the companies knew about addiction risk and how they designed products to maximize engagement despite that knowledge.
Some legal experts predict settlement discussions will begin in 2025 as more internal documents become public through discovery and as the volume of cases increases. The tobacco litigation model is often cited—an industry that spent decades denying health effects and claiming users made informed choices, until internal documents proved the companies knew the dangers and designed products to maximize addiction.
For individuals considering legal action, the timeline for filing varies by state based on statutes of limitations, which typically begin when the injury was discovered or should have been discovered. Given that gambling disorder often takes months to recognize and diagnose, and that the mobile sports betting industry only began widespread operations in 2019-2020, most potential claims are still within applicable filing deadlines.
You started betting because highly sophisticated companies spent billions of dollars on advertising, product design, and lobbying to make it easy, appealing, and normalized. You developed gambling disorder because those companies designed products with features proven to maximize addiction, targeted you with personalized promotions when you showed signs of problem gambling, and chose revenue over user safety at every decision point where the two conflicted.
What happened to you was not a personal moral failure. It was a predictable outcome of a business model built on the documented fact that a small percentage of users will develop serious problems and will generate the majority of revenue. The internal documents, the research studies, the regulatory findings—they all point to the same conclusion. They knew the risks. They knew the vulnerable percentage of users. They knew the design features that would accelerate addiction. And they made the conscious business decision that the profits were worth the human cost. That decision has a name in the civil justice system, and increasingly it has consequences.