Depends on your definition of a free market. It is free in the sense there is no government (or other entity) controlling it.
By that definition, the black market is a free market. You could argue about the word 'unrestricted' but I doubt you'd change my mind.
The bakery competition is limited to people who want to run a bakery. The beer store market is limited to people who want to run beer stores.
Breaking the law obviously isn't an issue for people in drug industry.