Doesn't really present anything terribly surprising. Bigger cities have crazier cost of living and wages for the degree-less are, no surprise, not keeping up. I don't think anyone here will be shocked to find out working at mcdonalds or as a janitor in SF or NYC isn't as viable as a smaller city.
I ran restaurants for a time and it seems that city locations get most of the surplus gained by volume eaten away by higher rents, greater regulation (more expensive to build out) and taxes. Lower volume suburban locations had better per unit profit at the end of the day than high volume locations where I worked (provided the low volume location hit a certain threshold).
