Microsoft is in much less of a position to screw with standards than they were back when IE was a problem. I'd be more worried about Apple and Google running the browser show if I were you.
I was more concerned when Microsoft did. I have no issue with Apple or Google. In fact, if it weren't for Google and Mozilla, we'd all be using IE6 right now.
I don't have any concerns with Google, but Apple's "No browsers allowed except for new UIs tacked on the iOS WebKit framework" is not my favorite thing ever.
