Putting an absolute cap on supply, which is what medallion programs do, is not a free market solution. If you feel that use of the streets is not being ratione

Putting an absolute cap on supply, which is what medallion programs do, is not a free market solution. If you feel that use of the streets is not being rationed efficiently, or that heavy users of the streets are not paying enough relative to light users, then you can impose some kind of sliding scale or conditional tax on street use. This is not at all the same as an absolute cap on supply.