Microsoft isn't like Google or Facebook or Amazon because their most important customer base is business - and business values predictability not the latest feature. If Windows Live gets a new interface overnight, the boss says "shit" not "cool" because six of his ten employees are spending time navigating the change rather than being productive - and ten of ten are bitching about it. Try to find Google's roadmap for the next year - never mind the next three. Imagine trying to organize a large business based on Facebook's terms of use, how long would that last? Sure I'll grant that Amazon's cloud service is likely to be stable, but that's the exception - Amazon isn't rolling out lots of beta's like Google or rewriting its TOS every week like Facebook. No, Amazon is dull and boring and focused on providing stability, just like Microsoft.