That is a very good point. When businesses close down or leave town, the professional service industry follows. All of those doctors, accountants, lawyers, psyc

That is a very good point. When businesses close down or leave town, the professional service industry follows. All of those doctors, accountants, lawyers, psychologists, physical therapists, and so on need people with good jobs to support their income, so for them there's no sense in sticking around when theirs are the kinds of industries that reliably expand and contract with the economy as a whole.