Meta, the social media giant, agreed to change the way children interact with its apps. That could be trouble if its competitors don’t abide by the same rules.

The social media giant settled with 47 states, the District of Columbia and U.S. territories, and agreed to make major changes to its products over claims its platforms endangered children.

Adam Mosseri testified in a case brought by states that claim the Meta-owned app created addictive features to hook young users.

The Justice Department resolved a lawsuit that accused the social media company of illegally gathering children’s information.

The case was the third of nine major personal injury cases that could expose Meta, YouTube, Snap and TikTok to financial damages and force them to change the designs of their platforms.