Having failed to launch a mining ASIC company in 2012, my only comment would be that the Caravel 130nm process will not be power-competitive with commercial mining chip. It would be a fun educational project, however.
Those on less efficient gear eventually get pushed out of the market because they can’t make a profit.
A 5nm node is many many times more power efficient than 130nm. There’s no contest. An ASIC with that kind of power draw would not be a profitable mining processor.