Excuse me but wasn't the default browser and default search engine selection mechanisms something Microsoft was forced to adopt (and dragged its feet for as long as they could to do it, in fact, insulting the EU in the process)? I mean... They were perfectly willing to abuse their desktop OS monopoly to push Google and Mozilla out on a regular basis. Now they are shocked by this "blatant" abuse?
Google should not be able to restrict what site owners do with their search boxes or ad spaces. Google should also not prevent Microsoft from indexing its content but I maintain this is not what's happening.
The only reason Microsoft is complaining is to create a bunch of news headlines with "Google" and "Monopoly" in them. When I open a page in YouTube, there is a lot of data there and Bing would be quite effective if it indexed that. Are they suggesting Google sends different content when the crawl comes from Microsoft servers? Let them show it.
Microsoft is the definitive authority on monopoly abuse, but allow me not to take their word for it without proof.
I find it odd that you're not saying that Google should let there be an open playing field. If a site wants to host both Google and Bing they should be able to.
Of course when it comes to Google they can do no evil -- because they told you so.