the tech to make a Lisp chip and the software to run on it don't exist.
I wouldn't be so sure about that but it's not the same for sure.
https://opencores.org
https://3lproject.org
Still unrelated to whatever these nonexistent """unix users""" are but making a cnc machine so you can assemble circuit boards and attach ics automatically isn't easy. Then there's the radiated shit, I got permanent burns from that. Freedom isn't free.