When you press . on github you _are_ using one of those options--monaco, as built into VS Code's new client/PWA experience.

Exactly what I was looking to understand, thank you for the feedback.

You are thinking of personal use cases, but the point of these editors is that they strive to be as light weight as possible and are meant to be part of some online service that for some aspect of their functionality/features includes offering an embedded code editor. VScode has too much stuff for most of those use cases where you'd use something like CodeMirror.

vscode is built on top of Monaco. These are all lower level editors with very well exposed APIs that let you build on top of them. It's more for developing something with a code editor versus directly using them everyday as your editor, though I'm sure people do.

Maybe if you were developing on a Chromebook. But yes, I don't see any other reason. I'm curious too.

Like X Windows for UNIX development or RDP/VNC for Windows.

IT has the final word on what development servers look like, what tools are allowed and what devs are able to do.

Remote development servers are the IT dream on devs not screwing up devenvs, or sneak in unallowed tooling.

IMO... you don't. Microsoft won the day (for now anyways).