This thread started with me saying "small businesses in the country are unprofessional". You're arguing against that because ... rich people in the country who run massive businesses ... are smart? OK, sure. ...but I have no idea how that's an argument against my thesis.
well, (a) I named it as 1 out of 3 mechanisms (b) it's my understanding that brain drain from the countryside is a proven fact so if you want to assert "A exists and B exists, and A sure could explain B, but I assert that it DOESN'T (even tho I have no proof)" ... well, ok