I assume only as long as remote is using adequate number of physical monitors? Or can one run a virtual guest with a single virtual monitor and then use as many monitors as host has?

Does it have multimonitor support?

It could if there are issues accessing hardware directly. Overhead is, as you said, not that important.

The docker is not bare metal though.

I’d say games. I’d that really takes off, Linux would replace Windows and all other standards will follow.