Forced obsolescence. Imagine if car manufacturers refused to service your car after you had it for 7 years. Parts no longer available. Recalls eliminated. Refusal to repair critical functions.
The outcry would be loud.
But with an operating system, they deliberately and intentionally BREAK your computer if you don’t replace your operating system with a new one that will break many of the functions that are now working.
Car manufacturers would be thrown in jail. Why isn’t Microsoft and Apple management held responsible?
Free Win10 via “open” upgrade path from Microsoft worked for me:
https://www.digitaltrends.com/computing/how-to-get-windows-10-for-free/