Suppose that we were supplied with groceries in same way that we are supplied with K-12 education.

Residents of each county would pay taxes on their properties.  A huge chunk of these tax receipts would then be spent by government officials on building and operating supermarkets.  County residents, depending upon their specific residential addresses, would be assigned to a particular supermarket.  Each family could then get its weekly allotment of groceries for “free.”  (Department of Supermarket officials would no doubt be charged with the responsibility for determining the amounts and kinds of groceries that families of different types and sizes are entitled to receive.)

Except in rare circumstances, no family would be allowed to patronize a “public” supermarket outside of its district.

...

Does anyone believe that such a system for supplying groceries would work well, or even one-tenth as well as the current private, competitive system that we currently rely upon for supplying grocery-retailing services?

via Grocery School.