If the question, “Who is Meta’s biggest rival?” were on a Family Feud survey, TikTok would likely be the winning answer. In the Federal Trade Commission’s antitrust case against the Facebook and Instagram owner, the government’s response probably wouldn’t even make the top 10: a small blockchain-based platform called MeWe. MeWe looks a fair amount like Facebook at first glance, except that you make an account using the Frequency blockchain — which the company explains is a decentralized protocol...