The tourism generates income for the regime, you have to use USD (correct me if this has changed now, but I doubt it, USD is very much in demand) to buy goods there as a tourist and when you buy the package tour, if you check out the itemization you'll see that there are some payments for administration guff which are basically just payments made to the governing bodies. That's said though, it's trivial and as long as the tourist understands that what they're seeing is a facade (which I would wager many do, perhaps not OP) then it's not really that different than sitting on your ass and turning a blind eye to the atrocities because cheap 1440p monitors! it's a bit reactionary, especially given the lack of knowledge of the situation displayed by most of the worst offenders.