Excellent challenge to the big OEM's. I doubt many will give it a second thought.
What I'd love to see is some of the gifted and talented Makers we've seen in 2019 whip out their dremels and 3D printers and say, "THIS is what I want!"
Couldn't you take a chassis with a high-end screen and fabricate a mount that would accommodate securing an AMD board to the existing mounts of a previous Intel board?
I know I sound naive, but I haven't looked into it yet. It certainly seems possible from a basic engineering standpoint.
EDIT: my horrific grammar