I'm not hugely disappointed with Linux's marketshare per se, because that doesn't affect a Linux user's life as much as you might think. It does what I need it

I'm not hugely disappointed with Linux's marketshare per se, because that doesn't affect a Linux user's life as much as you might think. It does what I need it to, stably, and I rarely run into old annoyances like hardware compatibility or incompatibility with specific tools I need for work. It's encouraging that Mac OS and now Windows (with WSL) have made some effort to become more reasonable Unix dev environments too. The dollar cost of the OS on new machines doesn't seem intolerable; you can do a lot with a cheap Chrome OS or Windows device. There are problems today that might not exist in a more Linux-y world, especially the remarkable power of a few huge companies to shape users' computing experiences. On the other hand, if Linux had had some huge commercial backer, whatever popular distribution won could have ended up with similar issues. In any case, my preferred desktop "winning" is not the only or best solution to those problems; users get some support from market forces (which I think we can partly credit for useful cheap devices and Microsoft's transformation) and where they don't help, well, regulation, including antitrust regulation, is always out there.