That's a non issue since most businesses upgrade their fleet every 3 years or so and are also very slow and reluctant when upgrading to newer versions of Windows (my last job switched from Win 7 to 10 only 4 years ago) so by the time they finish waiting out for Microsoft to iron out Windows 11, years down the line, their fleet will have been already replaced at least once.

Have you ever trained a few hundred or more 'non-tech' people (and I mean people who don't know what a file is) on a switch from Windows to something non-proprietary? How did that go for you, if so?