M$ is big and has some inertia but it is well past its prime in terms of shaping markets. The sectors that it locked in solidly, retailers and OEMs of PCs, are still pretty well locked in but the growth has gone. While Moore’s Law has made the price/performance of integrated circuits plummet, there’s just too much hardware in a PC made the old way: huge batteries/PSU, case, and wasted space between bulky drives. ARMed devices are able to be built for less and give most users of PCs what they want plus extraordinary mobility and M$’s OS does not run on them, yet.