It's a bit of a mixed bag, but usually the tourists that visit for drugs aren't the ones that spend money on good food, hotels and museums. This is a broad gene

It's a bit of a mixed bag, but usually the tourists that visit for drugs aren't the ones that spend money on good food, hotels and museums. This is a broad generalization, I know, but may just come for the weed, get hella stoned, drink too much and cause issues in the city. British stag parties are the worst example of this. These groups treat Amsterdam more like a theme park than a city... But that's just Amsterdam. A lot of the drug tourism isn't the stuff like that, that you're probably thinking about. A lot of it happens in border towns and is essentially trafficking by criminals. They come to the Netherlands, buy quite a bit of weed and go back to their home countries to sell it. In those countries it's illegal, hence the criminal part. These are not the types of people we like to have visiting our country.