It depends on the direction Windows itself wants to go in really. This isn’t the early 2000s where Windows was the used OS everywhere and was some hyperpower among software. Most apps are cross platform and there is a healthy ecosystem of OSs. Microsoft can let itself be the gaming and office PC, it can attempt to remain being the jack of all trades and master of none, or it could plot its own new course. I think either way they’ll have plenty of costumers.