There's also a not insignificant number of employers that use their status as one of a very few employers in town to abuse employees, either in salary or otherw

There's also a not insignificant number of employers that use their status as one of a very few employers in town to abuse employees, either in salary or otherwise, because the barrier to quitting is "do I want to uproot my entire family and have to move?" This definitely factors into people not wanting to move to places where there aren't not only jobs, but enough variety in employers to hedge against the worst of the worst.