Government and corporate services might do well to consider Linux, but most people don’t even know what a command line is.

While this is true, Linux is not the only operating system which is not Windows.

Haiku doesn’t require you to do much with CLI.

OpenBSD is Unix with the accompanying culture, but it’s just more coherent to the degree that both CLI’s are very simple for administration (the way I use my non-work machine, I sometimes think that maybe I should switch ; lacking Wine and games would be an advantage, not a disadvantage) and GUI’s to do it have fewer problems than in Linux. NetBSD - a bit more messy, but same as compared to Linux, FreeBSD - even more, but same as compared to Linux. I’m talking about the base system, because X, desktop environments and such are the same.

This doesn’t solve the problem of Windows device drivers’ support, which is realistically the main thing you’d need for an OS to be popular. Applications are important, but I think if Altera would have a big buyer willing to run Altium on Linux workstations, they’d find in themselves the effort needed make it work in Wine.

But then there was time when ndiswrapper and ndisgen were a thing for Linux and FreeBSD users. Things may have gotten much more complex, but it’s a matter of demand.