"Microsoft belatedly realised this with Windows and Office - sell it once, and people then expect support and updates free for the next decade. Now they're switching to (expensive) subscriptions, "
I wouldn't mind paying for Windows annual updates to fix functional/security problems. As long as they were left working as they were - if I decided to stop having updates.
I've stayed with W7 and Office 2010 because of the mess that has been made of W8/10 GUI - and the "phone home" nature of their malware. No forward plan for me on Windows.