There used to a lot more fabs in the US and Europe back in the 90s. I used to work at a company that supplied fab equipment to many of them. My guess is there w

There used to a lot more fabs in the US and Europe back in the 90s. I used to work at a company that supplied fab equipment to many of them. My guess is there was a lot of consolidation over the years due to lax environmental laws and labor costs in Asian countries.