Assume for a moment that the 3D printer for logic gates is a little too much of a long-shot. So if somehow the funds for a large-scale investment into 'open' RISC-V processors are obtained, it is theoretically possible for a community of hackers to write their own BIOS'es on a these processors? And then eventually the whole stack going up to userspace applications. So the only problem right now is that of funds? What other obstructions will be there to build a completely libre system from the ground up?

EDIT : Also, HomeCMOS doesn't look active as of June 2013.