A publisher like Microsoft is all about a lot of power and money. Gamers have been missing legendary games with great attention to detail for many years. So many empty promises since the Xbox One. They only want the biggest studios with ALL their ip's and to take the games away from the competition (see Bethesda).
This dirty US strategy from Microsoft is really stupid in my opinion. Sony could have bought all the big studios in the PS2 era and didn't because of the laws of the world and because they have more (Japanese) honor. Some employees have already left Bethesda/Microsoft incl. Shinji Mikami.