Here in Pasadena, there's a successful little chain (about to have a third location) of beer bars that specialize in being eclectic and having a bad ass selection of different beers. Lucky's has such an amazing selection of Belgians for instance that Dave, the owner and speaker in this story, was knighted by the Brussels' Brewer's Guild.
One day I was in the pub and pointed at a tap of Stella that he had on and made fun of it. Dave stopped what he was doing and emphatically said: "That one tap pays for all of these others" (He has about 40).
Now granted that's a pub and not a brewpub, but Dave has managed to thrive in what has been a beer desert by that rule. I think for anyone in the beer business, I cannot begrudge them using the big brewers as means to siphon off the cash they need to make the rest of our happiness possible.
Besides, at some point, some one drinking a big lager product in one of these places is going to have to get curious and try something. If they don't after multiple exposures get curious, then they're never going to anyway.