Every single time a major government attempts a war on drugs, it will fail. If people like drugs, the market will supply it for them.
When they shut down Hansa Market and Alpha Bay, people will move to Dream Market. If they shut that down, people will move to a new marketplace every time.
If the markets get shut down too often and the owners fail to keep them up, people will start decentralised marketplaces with the help of blockchain technology.
If they were really against drug use, there wouldn't be a capitalist system that encourages supply to meet demand.