Driver/System support can also be a bit spotty. I had problems with a Live Linux instance blow up the speakers on my old laptop, and the line-out left channel on my current desktop, because the default volume was maxed out, and that was way too loud for them to handle.

It's a bit better now, since a lot of distros come with a relatively simple graphical installer and defaults that cover most use cases, but even as a relatively technical person, it was a massive pain sometimes.

We do get some Linux systems, like Chrome OS, or Steam OS, but I doubt that it will go mainstream as a fully functional desktop. Not only is it not monolithic, where you have the Lemmy problem of there being a hundred different distros, but there's an expectation of someone being technical to both install and use it. Never mind that each distro has its own package manager and package versions.

Just look at LTT's Linus Sebastian's attempts at using Linux. He's more used to Windows, so inevitably ends up breaking things because he has no idea what he's doing, being in the gap of having a little technical knowledge, but not that much at all.