It is very inaccurate to say there is no other chip or silicon manufacturing in the state. There is a ton in Phoenix - Microchip has multiple fabs and is headquartered in Scottsdale, there's also NXP, ON Semi, Intel, probably more that I don't know about. It's not the exact same technology that TSMC is building (AFAIK), but there is definitely a strong semiconductor industry in Arizona.
It is very inaccurate to say there is no other chip or silicon manufacturing in the state. There is a ton in Phoenix - Microchip has multiple fabs and is headquartered in Scottsdale, there's also NXP, ON Semi, Intel, probably more that I don't know about. It's not the exact same technology that TSMC is building (AFAIK), but there is definitely a strong semiconductor industry in Arizona.