Where was the antitrust in all these years ?

I think it is a little too late now. Companies like Google have grown to the size where it is now impossible to stop them from being a monopoly.

I don't think there is anything, anyone in the world can do to really allow a fair competition in the space.

As for the fines that e.g EU has inflicted to Google in recent years, they are simply ridiculous, considering Google's revenues.