OK Sisko's response is interesting. Since the Federation, a post scarcity society, has been giving Quark the space and power and water and air for his bar for free, Quark can either negotiate with the union or pay the Federation for the value of all those things.
Analogous to people suing Exxon for climate damages. The exploiters are the parasites. The freeloaders. They owe us everything they have.