I can't speak to Carberry's, but The Original Steve's was a place famed in song and story. Really; I read about it once in an airline magazine, in a piece about the best ice cream on earth (which is still my opinion of Steve's; all else is dross. Yummy dross, but dross nevertheless :-).

I like Boloco, but it's not a one-of-a-kind unique place like Steve's was, and (IMNSHO) that location requires a retailer with that kind of notoriety in order to be success. Everything less than that has failed. It is possible that its curse is not that everything fails there, but that a place needs to be World Famous™ ion order to make it.