Again, you're comparing consolidation of gaming companies under publishers to console manufacturer. MS actually has strong financial interests in getting out more variety of games that people want to buy. And gamepass makes this reason doubly so.

And if on thay half a decade comment you are referring only to the new studios they have acquired (Obsidian and Bethesda) then they have put out games that people want to buy, just not exclusive to Xbox. So I'm not sure what you're referring to here.