One huge beneficiary of food stamps is WalMart. Without food stamps, their workers would be half dead from malnutrition and would frequently die right there in the store (bad for business). That would force them to raise pay. Thanks to food stamps keeping their worker units alive for them, they don't have to pay so much.
So since WalMart isn't real commerce (being a huge welfare recipient), we should jettison it. Fortunately, by raising the minimum wage, we may yet salvage it as an actual contributor to commerce.
As for the comment about cleaners, good luck selling food in a filthy restaurant that gets closed by the health inspector. The fact is, you would be forced to stop mooching off of the food stamp program and actually paying a living wage if you want to stay in business.