In an area like Seattle, where there are lots of active divers, would it be feasible for a local dive club to evolve into a sort of community-owned, non-profit LDS, with its own compressor purchased from modest annual fees of its members, who in return get heavy discounts on air fills, or unlimited free fiils at higher membership levels, and retain voting rights over the club's policies, including the rules that govern pricing of fills and whatever services the club would want to offer. If there were a critical mass of members, which I imagine is not impossible in an area like Puget Sound, perhaps it could be just enough to rent a small place, buy a compressor, and some tanks to bank air, and hire someone to sit there, maybe even multi-task as a technician to repair equipment. In the era of online shopping, no need for a store with equipment to purchase, and if the LDSs lose money on fills, there should be no hard feelings...
This happens at a number of UK clubs. Often they have a club house, sometimes even a pool. Those by the sea are likely to have storage for their RIB. Some provide trimix as well as air and nitrox, it depends on the diving the enthusiastic members are doing. Typically these are clubs which are part of BSAC rather than "clubs" which are an offshoot of a dive shop.
Maybe the US could do with an association of dive clubs which is about the members rather than a wholly commercial enterprise?
Ken