Xbox is a division of Microsoft. If the division does something to further the entire company there's nothing wrong with that. Sony doesn't make PCs and operating systems for PCs. Nintendo doesn't do that either. It doesn't serve their companies to make their software available on that platform.If you RAN the xbox brand wouldn't you be out to make them number 1?!?! that would be the main goal... your still negating the brand by putting the games on PC Selling games should be secondary, if the games are good they will sell themselves literally... they have the marketing money for the pushes anyways...
If I ran Xbox my goal would be profitability. Being #1 is irrelevant because some of the things that raise your position aren't profitable and are investments that could pay off but at the same time could drive huge losses.