Hi, oblates; welcome to our community.
I hear where you're coming from. I'm far less concerned about government intrusions (where we're protected by Constitutional rights and international law, and have recourse available in the courts and through the ballot box) than I am about all the rights we sign away daily to private corporations accountable to no one except their shareholders (most of whom are large investment funds only seeking to maximize returns for their investors). But if you're really worried enough about the data you're turning over to Microsoft (or Google, or whomever), you're probably better advised to look into "anonymizers" and other tools for masking your identity and your online activities, than to try the kind of setup you're asking about.
V/R,
--DistEd2