I think daveslash was suggesting the burger joint runs as the for-profit entity that it already is and that it is the source of the philanthropy, not the target.
To give an example, charge exorbitant prices for burgers knowing there are still people desperate enough to try the burger that paying $30 is fine and then use the extra revenue to give back to the community, possibly by paying for the local soccer club to get a new clubhouse, or possibly by providing free/subsidized burgers at local events where the crowd will be local. In this way the business stays open and isn't overwhelmed by the demand, while not completely isolating itself from the local community that the owner wants to give back to.
Yes, that is how I understood 'daveslash. My claim is that this fails to accomplish any of the goals of the burger joint's owner: he wants to provide a burger joint for the community, not a soccer club for the community. Saying "Why don't you run a fancy burger place and help the community in other ways than you wanted" isn't actually a solution to anything.
To give an example, charge exorbitant prices for burgers knowing there are still people desperate enough to try the burger that paying $30 is fine and then use the extra revenue to give back to the community, possibly by paying for the local soccer club to get a new clubhouse, or possibly by providing free/subsidized burgers at local events where the crowd will be local. In this way the business stays open and isn't overwhelmed by the demand, while not completely isolating itself from the local community that the owner wants to give back to.