"Up to the distributor" means that the big guys are not allowing other beers into the store. Read about the three-tier system and how BMC controls everything from the trucks to the shelving. They actually have people come in and control how their beer is displayed. They make it difficult to even find good beer, and now they are moving in with their craft crap.
I'm hoping more of the bud light drinkers try their "craft" stuff, that way they won't see an increase in sales, just a switch from their regular old drinkers...then the drinkers will want some real craft and abandon them altogether. Ahh, wishful thinking...