Given the way people wax lyrical about Immersed.com on the Quest, you might find that anyone who does a lot of terminal work gravitates towards it. That's not a small market. I can see the attraction: if both the computer and the screen are head-mounted, that's a lot of boxes and wires that can just go away.
It does depend on the environment implementation, mind you.
Is the intersection of people who like VR and people who like the Linux desktop big enough to support a commercial product?