People in crap towns drive expensive cars too. The inequality between a crap place and a nice place is now enough that people can afford a ghastly Lamborghini SUV thing before they can afford to move out of a crap town.

Only the drug dealers and landlords.

I remember a few years ago a politician was vilified for suggesting there wasn't much you could do about the derelict seaside towns. I have a feeling that what he said was probably quite close to the truth.