My bigger problem with economics as portrayed in the show is not how people are incentivized to work (some minimum that gets power to the household replicator), but that it says little about consumer choices. It's been shown many times that people have tastes that cannot be satisfied by the replicator. Who gets to eat at Siskos? Where does Riker get real eggs? Why should Quark stock yammuk sauce? Why should someone hold onto antique spectacles?