Meta CEO Mark Zuckerberg, Instagram head Adam Mosseri, and other Meta execs thought that TikTok was beating Meta at its own game. That’s according to a new filing in the U.S. Federal Trade Commission’s antitrust lawsuit against the tech giant, published on Monday. The document, dated February 2022, includes conversations among a number of Meta execs discussing Facebook and Instagram’s strategy and market position. In one message, Zuckerberg called Facebook a “challenger” that has “lost the mindshare and mom ...