Google's primary service is selling search ads that consumers view, primarily via search. Consumers have almost no lock in, and consistently choose Google search over Bing, etc. Google is not at all like Oracle in this case.
Google's business is selling ads to companies and agencies (which hate Google) and selling ad display tech to websites and publishers (which hate Google). They buy companies (Urchin, Doubleclick), make them free, destroy competition, introduce pricing. Pretty identical to the bad guys in tech history.
Even if that's true, it doesn't matter. Consumers are using Google, so there is not really a free market for search ads from thee marketers' perspective.
I don’t like google but I use a lot of their products and of course am involuntarily tracked by them all over.
I can hate them all I want, but I’m not their customer. So they have that going for them...