A California courtroom is currently hosting a trial that could reshape the legal landscape for technology companies. For the first time in the United States, a jury is weighing whether the design itself of social media platforms can be considered a product defect, not due to user-generated content, but because of how the platforms were intentionally built.
This case – K.G.M. v. Meta and Google – is an inflection point in the debate over Big Tech liability, with the potential to create a domino effect across jurisdictions worldwide. The plaintiff, a 20-year-old woman, alleges that platforms like Instagram and YouTube deliberately engineered addictive features that fueled her depression, anxiety, body dysmorphia, and suicidal thoughts. TikTok and Snapchat settled with her before trial, leaving Meta and Google as the remaining defendants.
The Core Legal Shift: Design as a Defect
For decades, Section 230 of the Communications Decency Act has largely shielded tech companies from liability for content posted by users. However, this lawsuit bypasses that protection by framing the harm not as stemming from user content, but from the platforms’ own design choices: infinite scrolling, algorithmic recommendations, unpredictable rewards, and autoplay.
The plaintiffs argue that these features operate on the same behavioral principles as slot machines, deliberately exploiting human psychology. This approach treats algorithmic design as a product decision, subject to the same safety obligations as any other manufactured good. The court has allowed this line of reasoning to proceed, a landmark decision with far-reaching implications.
What the Companies Knew: Internal Documents Under Scrutiny
A critical element of the case rests on what Meta and Google knew about the potential harms of their designs. The 2021 “Facebook Papers” leak revealed that the companies’ own researchers flagged concerns about Instagram’s negative effects on adolescent body image and mental health. Internal communications, now presented in court, reportedly compare the platforms’ addictive mechanics to drug pushing and gambling.
If the jury finds that the companies were aware of these risks but continued to prioritize engagement over user well-being, it could establish negligence and pave the way for significant financial penalties. The lead attorney for the plaintiffs, Mark Lanier, has previously secured multibillion-dollar verdicts against Johnson & Johnson, signaling the scale of accountability being sought.
The Science Behind Addiction: Complex but Consequential
While the scientific debate on social media addiction remains complex, the legal standard focuses on foreseeability. The question isn’t whether social media harms everyone equally, but whether platform designers had a duty to account for the risks to vulnerable young users, especially given internal evidence suggesting they were aware of those risks.
Researchers have found that the platforms’ design choices can exacerbate mental health issues in certain populations. If the jury determines that Meta and Google failed to exercise reasonable care in designing their products, the case could set a precedent for holding tech companies liable for foreseeable harm.
The Broader Implications: A Shifting Legal and Policy Landscape
Even if the science remains unsettled, the legal and policy landscape is changing rapidly. In 2025 alone, 20 U.S. states enacted new laws governing children’s social media use, and similar legislation is gaining traction globally.
The K.G.M. trial is more than just one case; it represents a fundamental shift in how algorithmic design is viewed. If the framework of holding platforms accountable for their design choices takes hold, every tech company will need to reassess not just what content appears on their platforms, but why and how it is delivered.
This trial has the potential to redefine the relationship between Big Tech and its users, forcing companies to prioritize safety and accountability over engagement at all costs.
