With Google the case seems very different: advertisers are free to stop advertising on Google any time they want. Contrary to Microsoft, Google cannot leverage any network effect to keep Internet users (the ‘consumers’) to stop using Google for search. I can go and use Bing any time I want: Google search uses an open standard, it’s a freakin web site. The simplest thing Microsoft has to do in order to take 40% of Internet users’ search is to pay a sufficient amount of money to Mozilla, and voilà: all Firefox users will have Bing as default search engine.
Same thing with many other Googl services. If you don’t like Gmail anymore you can take all of its archive, contacts, and everything else and move it somewhere else: open standards (IMAP) at work again.
And, should Microsoft not want to pay Mozilla, Google’s search engine can start to suck any time or more privacy issues may arise, and users will move to the next best one (didn’t we all move to Google from Altavista already?)
What am I failing to see in these new wave of antitrust complaints against Google?