Is that really any worse than Google? At least with Windows, the Microsoft account is optional; you can't even create a local ChromeOS account without a Google account (which is a little bit more disturbing these days).
I think the bigger case against Google on this front is with how they are tying Google+ to Google Search. I am actually kind of surprised they have not gotten more heat for it - if Facebook ever succumbs its market share to Google I suspect an issue will be made of it. But then, even with search you have to work very hard to make the case that people are "locked into it".
As it is, I'm staying on Windows 7 (I have only one laptop and need Word, otherwise I'd be using Linux instead of a Linux VM) and Paranaoid Android. No unwanted Micrsoft or Google products anywhere.