When was the last time you bought moonshine, or bootleg liquor?
If the taxes are set at an appropriate rate, there is no profit motive for a black market. And little incentive for the otherwise law abiding to enter it.
Stills continue to operate all over the country. Speaking for myself, I've never bought any, although I have a budy who shares his home brewed Guiness.
Around these parts there’s a long, proud, and ongoing history of making the stuff. A local state park keeps an example still on display in the woods, a high-class regional magazine had a classy article detailing (not _too_ much detail though) about local continuation of the art, and if you know the long-term country locals well enough they can see to it you get what you need. I may not buy it, but that’s only because of an unhealthy fear of breaking the law and sufficient local demand leading some makers to jump thru the high & prolific hoops needed to make theirs legal.
To answer a different way:
I would _make_ liquor, hindered _only_ by the prohibitive taxes & regulations involved. I make mead on occasion (entirely legal), and wouldn’t hesitate to remove the water from it if not for the prospects of being arrested for isolating a substance legal to make in diluted form.