I just recently travelled to Windsor, Ontario and there was nearly nothing to be found other than valley BB. I was told flat out that there was only 1 9ft table in that city (pop:~250k). Everyone lives and breathes BB... When I inquired why so much BB I was simply told that that's what everyone played, and with sharing a border with Detroit, which also is predominantly BB, it only makes sense.
Seems like BB is the game of choice in some regions. I happen to enjoy the few times I do play on a valley BB. Not sure if I'd make it my full time game though.