Not that antitrust has to be based on market share but - it is kinda hard to claim Facebook has a monopoly on much of anything. Facebook is a big player but the

Not that antitrust has to be based on market share but - it is kinda hard to claim Facebook has a monopoly on much of anything. Facebook is a big player but there are dozens of big alternatives. That is not at all the case for Google. Search, YouTube, browsers, Android all have a dominant market position.