Well I was just thinking the other day that Microsoft really doesn't have any first party studio that are really as good as Sony's first party. IMO they didn't release a game 'this' gen that makes picking up a xbox one worth it. This could change that with fallout and doom. Also this allows them to bring the ID tech engine under their stewardship....
I just hope that they don't trash the franchises in an attempt to bolster game pass.