Meta is facing a legal challenge that could affect far more than the future of Facebook and Instagram. A major trial underway in California is testing whether social media companies can be held responsible for deliberately designing platforms to encourage prolonged use among children and teenagers. The case is important because the allegations focus not simply on harmful material posted by users, but on the architecture of the platforms themselves, including features designed to keep people scrolling, watching and returning.

The case brought by California, Colorado, Kentucky and New Jersey alleges that Meta designed Facebook and Instagram to maximize engagement among young users while knowing that certain features could contribute to physical and mental harm. Prosecutors have also accused the company of failing to adequately address the presence of children under 13 and of misleading the public about the risks. Meta disputes the allegations and has argued that the challenges surrounding children’s social media use are complex and that the company has introduced numerous safety measures.

The stakes are unusually high because the plaintiffs are seeking remedies that could force changes to the way Meta operates its platforms. The litigation is part of a much wider legal campaign involving dozens of states and thousands of individual claims against major social media companies. Meta’s own regulatory filings indicate that some plaintiffs in these cases are seeking damages or other financial remedies that could exceed a trillion dollars in aggregate, alongside demands for substantial changes to business practices and platform design.

The immediate question is therefore not whether people will stop using Instagram or Facebook if Meta loses. The more consequential issue is whether the commercial model built around maximizing engagement can survive if courts begin treating certain engagement mechanisms as a source of legal liability.

The Case Targets How Social Media Keeps Users Engaged

The significance of the California trial lies in what the plaintiffs are challenging. The case is not primarily about whether individual posts are offensive, misleading or dangerous. Instead, it focuses on design choices that determine how users encounter content and how easily they can continue consuming it. Features such as infinite scrolling, autoplay, repeated notifications and algorithmically selected feeds are central to the argument that the platforms can encourage compulsive use.

This distinction could have major consequences for the technology industry. Content moderation has traditionally been one of the principal areas of regulatory pressure on social media companies, with governments asking platforms to remove illegal or harmful material. A legal finding that the underlying design of a platform can itself create a foreseeable risk would move the debate into a different area. Companies could face scrutiny over the way products are engineered, tested and optimized before users even encounter individual pieces of content.

The commercial logic behind these features is also difficult to separate from the legal dispute. Social media platforms generally benefit when users spend more time on their services because greater engagement creates more opportunities to display advertising and collect information about user behaviour. That does not by itself establish that a platform intentionally harms children, but it explains why changes that reduce compulsive engagement could have financial implications. A legal requirement to make feeds less persistent or notifications less intrusive could potentially alter the economics of the products themselves.

That is why the case is more consequential than a conventional product-liability dispute. If courts establish that certain engagement features create unacceptable risks for children, Meta could be forced to modify elements that are deeply integrated into the user experience. Such changes could then influence competitors that use similar design techniques.

A Previous Verdict Has Already Raised the Stakes

The current proceedings are taking place after a landmark Los Angeles jury verdict in March found Meta and YouTube liable in a separate case involving a young woman who said she developed serious mental health problems after using their platforms from childhood. The jury awarded $6 million in total damages and found the companies negligent in the design and operation of their services, including a failure to adequately warn users about potential dangers. Meta has appealed that decision.

The earlier verdict matters because it demonstrated that plaintiffs can persuade a jury to examine social media through the framework of product design rather than treating harmful experiences solely as the result of individual choices or user-generated content. The legal distinction is important. If the harm is attributed primarily to what users post, responsibility becomes harder to connect directly to the platform operator. If the platform’s own design is found to contribute substantially to the harm, however, the company’s responsibility becomes much more direct.

The California states’ case goes further because it represents government action rather than an individual claim. The lawsuit alleges that Meta knew about risks associated with its products and nevertheless continued to use features that encouraged excessive engagement among young people. A federal judge previously rejected Meta’s attempt to end the case before trial and agreed with California on a separate allegation that Meta had not obtained parental consent in a manner sufficient to comply with federal children’s privacy requirements.

That combination of private lawsuits and government enforcement creates a wider threat for the industry. Even if Meta succeeds in limiting its liability in one case, other lawsuits can continue. Conversely, if the states establish a strong legal precedent, plaintiffs in thousands of other cases could use the reasoning and evidence developed during these proceedings to strengthen their own claims.

A Meta Loss Could Change the Industry Without Killing It

A defeat for Meta would not necessarily mean the disappearance of Instagram, Facebook or social media. The more realistic possibility is that platforms would have to redesign the mechanisms that currently encourage continuous engagement, particularly for younger users. That could mean stronger age controls, fewer default notifications, changes to recommendation systems, limits on autoplay or scrolling, and greater restrictions on features that encourage repeated checking.

Such changes would not necessarily destroy the underlying services. The internet has repeatedly adapted when regulators imposed restrictions on established business practices. The more likely outcome would be a gradual shift in how platforms acquire and retain users. Social media companies could still provide communication, entertainment and advertising, but they might have less freedom to optimize every aspect of the user experience for maximum time spent on the platform.

The impact could be particularly significant for younger users. Meta already faces legal pressure over whether children under 13 are accessing its services and whether the company has taken sufficient measures to prevent that. Meanwhile, governments around the world are considering minimum-age rules for social media. Australia has already implemented restrictions for under-16 users, while New Zealand has announced legislation aimed at preventing children under 16 from using social media. The growing regulatory focus means that age assurance and safer design are increasingly becoming linked issues rather than separate policy questions.

Competitors would also have strong reasons to respond if Meta were forced to make major changes. Platforms such as Snapchat, TikTok and YouTube use many of the same engagement mechanisms, meaning that a legal finding against one company could create pressure for similar reforms elsewhere. Indeed, Meta’s current litigation is only one part of a broader legal campaign involving multiple technology companies.

The Real Threat Is to Engagement-Driven Business Models

The most important consequence of the trial could therefore be a change in the economic assumptions underlying social media. For much of the industry’s history, increasing user engagement has been treated as an unquestioned objective. More time on the platform generally means more opportunities for advertising, greater volumes of behavioural data and stronger incentives for companies to refine algorithms that keep users returning.

A legal environment in which certain engagement strategies create liability would complicate that model. Companies could have to demonstrate that product decisions were reasonably safe for younger users rather than simply proving that the features increased engagement. Internal research, safety assessments and product-development decisions could become important evidence in future litigation. This would potentially make safety considerations part of the engineering process rather than something addressed after a product has already been launched.

The issue could eventually extend beyond children. Analysts have warned that the larger existential risk for Meta would come if similar claims were successfully brought by adults who argue that platform design contributed to addiction or psychological harm. That would dramatically expand the potential pool of plaintiffs and make it much harder for companies to treat youth protection as a limited compliance problem.

For now, the legal outcome remains uncertain, and Meta continues to defend itself against the allegations. The company has also appealed the earlier Los Angeles verdict, meaning that courts are still working through fundamental questions about how existing law applies to social media design. But the direction of the litigation is already changing the industry’s risk calculation.

The potential significance of the current trial is therefore not that people will suddenly stop scrolling or that Instagram Stories will disappear. It is that the features responsible for making social media highly engaging could increasingly become subjects of legal scrutiny. If courts establish that companies can be held responsible for designing products that encourage harmful patterns of use, the industry’s central design philosophy could face pressure to change. Social media may survive such a transformation, but the assumption that platforms should keep users engaged for as long as possible could become much harder to defend.

(Adapted from CNBC.com)