And I think therein lies the problem: "accustomed to Windows" market monopoly. It will take time, but maybe all the TFA's older computer hardware will be refitted with Linux and maybe, slowly, we can get Linux into people's hands and more and more people will become accustomed to Linux.
The problem I see: Linux is so splintered. What distro should become fairly standard? Okay, maybe many are okay for the task. But what window / desktop manager? What look and feel? For some it will matter. Some might be okay with a variety as long as they can find applications, open and save files, shared drives, etc.
Personally I'm a very longtime Linux advocate (1995 or so). I'm torn because on one hand it's great to have the openness of Linux and distros, but on the other hand, there's no standardization of packages, package managers, window managers, Xorg vs. Wayland, etc. It's like the openness is its own enemy- lack of cohesiveness. I can cope, but the masses don't want to learn a ton of specific stuff, only to have no clue when they use someone else's computer.
Add to that: I'm a systemd hater, so that cuts out most distros, but that actually makes things simpler for me- only a few to choose from. But because of that, I got tired of spending (wasting) time evaluating various distros, so I end up sticking to whatever is simple and works for me, but wouldn't be good for the masses.