GP is right, so rationally everyone who could - would rather live in Mountain View and work a FAANG job than live in some factory town in the Arizona desert.
Apparently there just aren't enough such people, so FAANG will keep paying more and those who can't get these jobs will have to take the worse paying position that requires harder work, more dependency on a single employer, under far worse working and living conditions.
Phoenix isn't some "factory town". But your general point is true - wages in the electronics sector are stuck at the same amount that they were in the 2000s.
That's why companies like Andruil and Tesla can poach electronics and MechE talent with still low but not as low wages (110-130k with a bunch of stock versus 70-100k with almost no stock).
unfortunately you can't expect people as individuals to make those calls. You need mechanisms that properly value long-term sustainability