MS has inertia on its side, and its abusive marketing and lock-in strategies of the 90s. Remember when you couldn't buy a PC without Windows from most vendors? Meaning you were paying MS, even if you immediately uninstalled it?

The long term outcome of that is that 90+% of industry still buys Windows PCs. And non-industry: once non-techie people are on an OS (Windows/MacOS), many don't move off it, though Apple's ecosystem has been a good carrot+stick.

One of the more interesting indicators is (even though desktop software is in decline) - the number of apps that are Windows and Mac and maybe linux, and the increasing number of apps that Mac-only or Mac+Linux but do NOT have a Windows download. Something unimaginable in the 90s and 00s.

MS are certainly accelerating adoption of other platforms due to their own mismanagement.