I think if MS had a share of the mobile market greater than 2% (or whatever it is at now) they would be less inclined to enable such spying through their deskto

I think if MS had a share of the mobile market greater than 2% (or whatever it is at now) they would be less inclined to enable such spying through their desktop OS. However they are nowhere in mobile (and search), and desktop is the only source they have for user data. The thought of getting left behind in the data mining race by Google and Facebook must be a real concern, and they will do anything to keep up. I suppose the LinkedIn takeover has changed this somewhat, but LinkedIn alone will not put them on terms with Google/Facebook.