A closely watched civil trial in Los Angeles is placing the business practices of major social media companies under judicial scrutiny — and legal observers say its implications may extend well beyond Silicon Valley, potentially reshaping accountability standards for the fast-growing sports betting sector.

The case, known as the “KGM trial,” centers on claims brought by a young woman identified as Kaley G.M., who alleges that her compulsive use of Instagram, TikTok and YouTube exacerbated underlying mental health issues, including anxiety and body dysmorphia, and exposed her to online bullying. The case is being heard before Judge Carolyn B. Kuhl in Los Angeles County Superior Court, where jurors have spent the past week weighing competing expert testimony over whether social media platforms can cause addiction in minors and whether such addiction produces measurable psychological harm.

While sports betting is not directly at issue, legal analysts and public health advocates point to striking parallels between the mechanics of social media engagement and those employed by online gambling platforms.

• The KGM trial is testing whether social media platforms can be held legally liable for designing products that allegedly foster addiction in minors. The case against Meta in Los Angeles could establish a precedent on causation, duty of care, and the limits of Section 230 protections.

• The science and design features under scrutiny — including algorithmic feeds, infinite scroll, and dopamine-driven reward systems — closely mirror engagement tools used in sports betting and iGaming apps. This overlap raises the prospect of broader litigation and regulatory action beyond social media.

• A ruling against Meta could accelerate regulatory and legal challenges facing the sports betting industry, particularly around youth exposure, advertising practices, and claims of deceptive promotions. Courts and lawmakers may increasingly frame digital engagement as a public health issue rather than solely a consumer choice.

The Mechanics of Algorithmic Compulsion

At the heart of the trial is the question of design intent. Plaintiffs argue that certain features embedded in social media platforms are deliberately engineered to foster compulsive use.

Among those features is “infinite scrolling,” which allows users to continue browsing content without encountering a natural stopping point. Similarly, auto-play functions automatically queue successive videos, while push notifications are sent throughout the day to prompt users to re-engage. Reaction tools — including likes and emojis — are designed to provide intermittent social validation.

Central to these arguments is the role of proprietary algorithms that tailor content feeds based on user data to maximize time spent on the platform. Critics contend that these systems are optimized to sustain engagement, particularly among adolescents.

The neurobiological component of the case focuses on dopamine, a neurotransmitter associated with the brain’s reward circuitry. Plaintiffs’ experts argue that the spacing of digital rewards — such as likes and shares — creates what some researchers describe as “dopamine gaps,” in which anticipation and intermittent reinforcement heighten psychological dependency. Adolescents, whose brains are still developing, may be particularly vulnerable to withdrawal-like symptoms when engagement declines.

Meta, which owns Instagram, disputes the characterization of its platforms as addictive. In testimony cited by sports business outlet Sportico, CEO Mark Zuckerberg rejected the “addictive” label, describing the company’s products instead as having “long-term appeal” and asserting that Meta has taken “reasonable” positions on privacy and safety.

The company’s legal strategy rests on several pillars.

First, Meta challenges causation, arguing that Kaley’s mental health difficulties predate her social media use and were influenced by family circumstances, including her parents’ divorce during early childhood. Establishing negligence would require jurors to find that Meta’s conduct directly caused the alleged harm.

Second, the defense points to contractual protections embedded in its Terms of Service, which it argues limit users’ ability to pursue certain claims.

Finally, Meta invokes constitutional and statutory protections, including the First Amendment and Section 230 of the Communications Decency Act, a federal law that broadly shields online platforms from liability for content posted by third parties.

A Broader Regulatory Moment

Regardless of the verdict, policymakers are increasingly scrutinizing the effects of digital platforms on minors. Australia recently became the first nation to enact a ban on social media use for children under 16. In the United States, Gavin Newsom has advocated for similar restrictions at the state level.

Leah Plunkett, a professor at Harvard Law School and author of *Sharenthood*, has described social media platforms as performative spaces where children are both content creators and consumers. “Many kids perform on them, often for money,” Plunkett has written. “Many kids are in the audience, effectively paying to watch with their attention, personal information and, at times, at the expense of their own health.”

The potential spillover into sports betting lies in the shared architecture of engagement. Professional leagues, teams and athletes rely heavily on social media to cultivate younger audiences. Meanwhile, sports betting apps deploy gamified interfaces, short-form video and promotional incentives that critics argue mirror social media’s engagement strategies.

The scale of youth exposure is significant. A 2023 study commissioned by the NCAA found that 67% of college students living on campus reported participating in sports betting.

The Public Health Advocacy Institute (PHAI), based at Northeastern University School of Law, has characterized the expansion of legal sports wagering as a public health concern. Executive Director Mark Gottlieb contends that gambling platforms use advanced algorithms similar to those deployed by social media companies to maximize “time on device.” “The science is quite clear,” Gottlieb said in a recent statement. “These are products known to addict many of their users in ways that destroy lives and families.”

The legal climate may already be shifting. In Massachusetts Superior Court, Judge Debra A. Squires-Lee recently partially denied a motion for summary judgment filed by DraftKings in *Scanlon & Harris v. DraftKings*, a case alleging misleading advertising and deceptive sign-up bonuses. While the judge observed that “there is no such thing as a free lunch,” she ruled that a jury must determine whether the company’s promotions had the capacity to mislead reasonable consumers.

The outcome of the KGM trial could redefine how courts view digital addiction — not only for social media platforms like Meta, but for the rapidly expanding sports betting and iGaming industries that rely on similar engagement-driven design.

A Precedent in the Making?

If jurors in Los Angeles conclude that social media platforms can be held liable for designing addictive products that harm minors, legal scholars say the reasoning could embolden similar claims against other app-based industries — including online sports betting and prediction markets.

Conversely, a defense verdict reinforcing statutory protections such as Section 230 could strengthen the legal shield for technology platforms more broadly.

For now, the KGM trial remains focused on one plaintiff’s experience. Yet its outcome may help define how courts interpret digital design, addiction science and corporate responsibility in an era where attention — and increasingly, wagers — are placed at the tap of a screen.