They aren't capable of doing that.
Source on that is me, I worked for MSFT during the rollout of Windows 8 and the 360 red ring nightmare.
They're internally wayyyyy too culty and cliquey.
Everyone has to do things the MSFT way, and the MSFT way is team leads all leading their own thing and arguing about why its so cool and necessary.
The culture is diametrically opposed to simplifying things and reorienting around a fundamentally minimized, more stable core system.
Everything has to be able to plug into as many other things as possible, which creates insane nested dependency loops and chains that they fuck up all the time.