There are some pretty ridiculous laws enforced around the world. One could easily set up legal business to help others do illegal things from another jurisdiction.
True, but most of the time they would be accused of complicity, hard to help somebody do something illegal without being accused of that. Especially if you do it on the Darkweb, which is by itself a confession of malicious intent.
I may be wrong, but I think that anyone doing anything on the Darknet is considered guilty until proven innocent. Not saying it's normal or a good thing, but I think it's this way.