I was starting to think I was the only one against these claims.
There's no one pushing Google down its users' throats. Yet people ask Google to behave like they want. Well, surprise! Google is a private entity and they'll do whatever they want. If you don't like it, leave. I left a long time ago but I believe these claims are unfair to Google.
We are being bombarded with "Google's x product is a monopoly". No they are not. There are tons of alternatives to anyone of Google's services. The thing is, they do it better than their alternatives. Free market, my friend.
If x alternative to a Google's service gets better, people will gravitate towards it. But don't ask people to drop the better product in order to give (undeserved) attention to the not-so-great one. Earn it!
People also complain about Google making their services' sites suck on other browsers. Well, their site, their rules. Not so long ago all online services had dedicated clients instead of web apps. Those apps weren't called "monopolies", yet there was no alternative client. Because the root of the monopoly argument lies in the "service", if there are no alternatives to the "service", now we are talking, but there's no monopoly in the "client". If you don't like the "client", drop the service.