Not infinity, so time to start saving up... lol =3
You or I? No.
Focused ion beam milling and electron microscopy machine is under $5m, but your fab output volume for pre-doped CMOS epitaxial grown core-stack wafers would never offset the capital investment. This is a very real machine, and no I don't have one available at this time. Probably it is for the greater good. lol =3
The Skywater fab ran its first wafers in 1987. You could not build such a facility today for the same reason you couldn't build a large-scale factory for carbureted automobiles or CRT monitors. People still use these things, there's still a market for them, they're still serviced, but you could never find investors to build new production capacity.
Most firms are now fab-less chip companies, and given the production volume economics... the market leaves little room for "new" competition. =3
