They just get diced up and have no voice in state or federal government, and you end up with things like the NC and Texas bathroom bills.
Why would a company like Amazon move to a state who's already so wrong on human rights issues? That's just asking for boycotts and mass resignations.
I'd wager it's vastly more likely Whole Foods will move away than Amazon moves in. I wouldn't be surprised if one of the main motivations for HQ2 was to move Whole Foods, and anyone else they acquire, into Amazon proper.