Because Microsoft is not only a games company. Video games are a growing part of Microsoft's business but are not the companies focus. In the next few years Microsoft will begin to see increased pressure on the Windows OS and the search engine business. They have yet to release a mobile OS (I know they're working on one) that can compete with Apple or Google's. I guess I'm trying to say they have better places to put R & D and aquisition money than on games.







