MS lost (or rather, made essentially zero head way in) everything except desktop computers.
Microsoft's booming business numbers would like to have a discussion.
$26 billion in quarterly operating income, about to overtake Apple in profit, and practically none of their growth over the past decade has come from desktop computers.
They have an extremely lucrative business across cloud everything these days and it has very little to do with Windows on the desktop.
Over the past decade that Windows desktop has largely been stagnant as a business, their total sales have gone from $78 billion to $218 billion. Operating income was stuck for 6-7 years in the ~$14-$22 billion range (the later Ballmer stagnation years), until after 2015. They'll cross $100+ billion in operating income over the next four quarters. All of that leap has happened from 2016 to now and basically none of it has to do with consumer Windows.
My gut feeling is Microsoft is making money by moving old Active Directory servers into their own cloud offering, Azure. Their revenue is booming because they make more money from hosting a server than selling a Windows / MSSQL / Exchange licence that runs on someone elses hardware. To give them their due, they do it well, facilitating a smooth transition that allows you to move one machine at a time into the cloud, while the patient is still going about their normal business.
That's all well and good, but it doesn't mean the proportion of people / businesses out there running Microsoft software is growing. Maybe it's dropping? I don't know. But if it is dropping, it's going to come to an ugly end in a few decades time.
I mean, would you rather have an OS that turns your computer into a personal space invasion device that helps a multi-trillion dollar megalith monetize your every breath while consuming a huge portion of the performance of your $1,000 personal computer, or would you rather have a lightweight customizable OS that only does what you tell it to do, doesn't cost you anything, and can do almost everything that the other guy can do just as well for free with no tracking?
MS has always been about forcing subpar tech with shady tactics, and they are very good at it.
Specially now that Asus, Razor, Lenovo are getting into the same space with Windows 11 devices.
After all Proton is all about running Windows games.