Instagram Chief Says App Has Feared TikTok Threat for Years

A small portion of Instagram’s content comes from users engaging with family and friends as the app focuses more on video offerings to compete with TikTok, the platform’s chief Adam Mosseri said, seeking to fend off government claims that Meta Platforms Inc. monopolizes social media.

Mosseri, a longtime Meta employee who became the head of Instagram in 2018, testified Thursday that the social media market had changed “dramatically” since he first joined the company. Instagram is now locked in a fast-moving race against TikTok and competing platforms, he argued, with all offering similar features and vying for the same core ...