There already are a couple of organizations like that.
https://trisquel.info/en/forum/dash-desktop-and-mobile-architecture-system-hardware
I don't think any free software friendly hardware has been produced as a
result as yet. Some vendors were at one of their shows. Think there were 500
attendees, not sure how many vendors.
Might be interesting to get a list of the vendors at the show to see who
"cares" about such hardware and concerns. The big names all seem to be
involved with the other organization, DMTF.