They might specialize in other drugs like cocain, heroin, MDMA, etc. This kind of drugs may never be legalized and there will probably still be people buying it

They might specialize in other drugs like cocain, heroin, MDMA, etc. This kind of drugs may never be legalized and there will probably still be people buying it. But it might harder to enter in this market as people selling it are often quite organized and violents (apart maybe the last seller on the chain).