system
A chat on subreddit /r/pcmasterrace
human
Far more computers are used for business than gaming. They would sooner transition to MacOS then Linux due to average user operability.
gpt
Except again, having to buy a whole bunch of new hardware. Not to mention needing to figure out MacOS enterprise management, which as far as I'm aware is either nonexistent or terrible. Ubuntu, on the other hand...

MS Office would be a good argument, but we are assuming MS is dead, so... Yep, I'm gonna go with not wanting to spend many millions on new equipment and licenses.

I do concede your point about average user ability, though.