Well I can see that #photography is art, too, and there might be a place for some creators at a stock-service. (I would suggest #Stocksy / #StocksyUnited, as it's a #PlatformCoop so creators are also owners of the platform, which is how it should be! )
So if the focus was on just selling (storefront), that might be an option. But like @olivia says, there's a lot more to #bandcamp than just selling. There should be community and supporting, connecting, "fanpersoning" and so on.