All that computer libertarianism aside, I haven't paid for Windoze since XP; and even that was in a program called SoftWindows (or VirtualPC, who can remember that long ago...) to run Windows on a PowerPC (IBM-Motorola-Apple) Mac!
When I discovered that various wireless radios programming software needed to be run in Windows, I sucked XP out of that program, and armed with my serial number, I reinstalled it, first into BootCamp, when Mac went Intel, and then into Parallels, when I wanted to be able to run Windows and MacOS concurrently (like needing to use copy and paste between environments).
And that worked for me for years, hand in hand with Chirp for certain radios that were lucky enough to have been reverse engineered by those dedicated radio hounds!
And then sure enough people started asking me questions about how to program certain radios that only had Windows CPS software and they only had Windows 10, or gosh-forbid, Windows 11, and did not even know what XP was!
So I had to break down and install an upgraded version, but after some research I discovered Windows 10 and 11's dirty little secret: You do NOT need to activate it!
Now I do not know if this is an after-result of the MicroSoft antitrust settlement, or some other "business reason," but it works perfectly fine if you do not activate it. Now Microsoft is not going to give you any technical support, but after all, all I am doing is programming radios!
AND, I turned off Auto-Update, because, well if it ain't broken, why fix it?!?