Are you talking about Google or Apple? Because Apple is being sued by the DOJ for monopolistic and anticompetitive behavior. There are numerous examples of it spelled out in the lawsuit:
Both of them. To the extent that Google uses their position with chrome to give themselves in another domain they should be sued. Likewise, Apple refusing to allow consumers to install whatever applications they want on their own devices is so egregiously anticompetitive.
In their wildest of wet dreams Microsoft didn’t imagine they could get away with what Apple is getting away with.