Your premise is very obviously false on the face of it: the notion that a company can own everything, always succeed, and generally dominate every major segment

Your premise is very obviously false on the face of it: the notion that a company can own everything, always succeed, and generally dominate every major segment it enters. Your criticism is that Microsoft isn't a $5+ trillion company, doesn't have five plus monopolies (desktop OS, mobile, browsers, search, and a few others that would go along with those positions including advertising), and basically isn't all knowing and all powerful. What you're projecting is impossible of course. No company could ever accomplish all of those things. What you're holding up as a supposed indication of incompetence, is in fact unavoidable: failure will happen, you will not always win, your products will not always succeed, and most likely you will fail the majority of the time; it doesn't matter who you are, or how big you are.