At some point, the black market reaches a critical mass where the thing you're taxing might as well be banned. >>> This doesn't make sense, because you're stil

At some point, the black market reaches a critical mass where the thing you're taxing might as well be banned. >>> This doesn't make sense, because you're still getting taxes on the white market merch. Even if black market merch dominates, its different from prohibition where you get no taxes.