The decision to prosecute Google or Facebook on antitrust grounds is inherently political. It went in favor of Google during the Obama years when the FTC's political appointees overruled the FTC staff's recommendation to bring an antitrust case against them [1].

They'll still have to argue that case in court.

[1] https://www.wsj.com/articles/inside-the-u-s-antitrust-probe-...