The effects of legalizing drugs would not have a major effect on organized crime. Situation in the past support the theory that organize crime would still thrive even without the sale of illegal drugs. The corruption, extortion, and trafficking would still be a major source of organized crimes income. In the 1920’s and early 30s when we had prohibition crime groups ran the illegal “speak easy”. The sale of illegal alcohol is similar to the sale of illegal drugs today. When prohibition ended the organized crime groups did not disappear they still had many other enterprising ventures they were part of.
There are countries such as Amsterdam which have legalized drugs, and they still have issues with organized crimes….