I don't think many are worried that Google won't defend itself.

Re: the other points... Are you implying that current trust-related investigations and such are mostly bogus?

Google defends itself against trustbusting constantly: Android, adwords... the platform businesses. It has lost cases & earned record-breaking fines. €5bn is just not a dealbreaker for Google.

They expect these occasionally because Google's main MO is prone to it, at their scale. Their platform businesses are exactly the "monopolies" Peter Thiel described as the goal of modern business. The whole point of antitrust is to dampen monopolies. It shouldn't be surprising they collide.

I don't really understand the counterargument to pursuing much more decisive antitrust legislation & control, myself. It seems like a clear win.