No medical shortage on the black market. You want to make sure you can see your doctor? Build a deck on his house. You get the lumber for the deck by going down to the government supply yard and giving the guy a case of vodka so he’ll look the other way while the boards disappear.
That’s how you roll in a socialist society.
they call it arbitrage
plus price controls means that items that actually get imported cannot be sold for anywhere near breaking even, and it is easier and more profitable to smuggle it to Colombia