That pervasiveness seems like a double-edged sword. First, what if Microsoft really does lose it in a big way (rather than just remaining stuff, boring and unimaginative)? Enterprises will really be on the hook to find replacements, and to create portable versions of all that documentation that's in .doc and .docx format. Second, does "the enterprise" and "the rest of the world" divergence have any consequences? The Sharepoint thing is a good example. Everybody else uses Apache, nginx or something, but corporations use Sharepoint because it lets them keep a thumb on their employees. Won't any innovation made by The Rest of the World just pass them by? Will Sharepoint admins end up making the big bucks because there's no easy to find, off-the-street source of those folks?