I’m not sure you can get away with the syllogism that just because some business practice is used by drug dealers it is automatically unethical if a legitimate business does the same thing.

It’s like when someone offers to sell you a product weighed in grams, you can’t just say ‘ah yes, the drug dealer measurement system’ and dismiss their business out of hand.

Because I don’t think the moral issue people have with drug dealers is that they take a deliberately easy going attitude to theft of their merchandise and allow others to profit from selling it to a territory, only to later on increase their prices.