I'm not sure Microsoft had such a grand vision early on; they were late to the Internet after all. And their public cloud play came along later as well. Neither did Apple. And I'd say that Google went from organizing the world's information to mostly selling ads.
Except that they largely deprioritized things besides search because they couldn't monetize to the same degree. Google Reader, Scholar, Books (and yes I know there were legal issues), Deja News/Groups, etc. They continue to sort of support things like Blogger but they're clearly not a priority. To Google, the "world's information" is mostly restricted to information they can serve search ads against.
