That's the thing for me: That doesn't work anymore. Privacy-Guarding destroys that. Normally, I would fully agree that this is a good vision for Microsoft, continuing to be on the Desktop (especially corporate), trying to be on other markets and failing mostly, but becoming a big cloud player. But for me, the cloud is dead, and the NSA killed it - I try not to use it if it is not really helpful and without obvious privacy issues (like http://rsspusher.eu01.aws.af.cm/, appfrog was fine for that, I still think that even if it predates that thought). And I know I'm not alone with that attitude.
Maybe that doesn't mean that the cloud is dead, rather that there is a minority for which it is. I'm not sure how to predict the influence of the surveillance on the techological future. But what it means for sure is that for me and a few other guys, a Microsoft being a big cloud player would be as dead as it was before. We will see whether that matters.