99% of people don't choose their OS.

They buy "a laptop" and it has an OS on it.

Or they go to work and are provided "a computer" and have very little say (or ability to change) what it's running, even if they had the impetus, know-how and knowledge that other things even exist.. you're always running the risk that things will break for you.

This is the moat Windows has. Not Games like people think, that's a stronghold for sure, but Gamers are inconsequential when compared to the amount of business computers and consumer systems people buy.

Chromebooks were the answer for most consumers, but damn, that business moat is basically damn-near unkillable, especially in Scandinavia. (I'm currently subject to it myself).