Your first fatal logical error is promoting the presumption that the war on drugs is “lost.” Prove it.
Drugs are prevalent on the streets along with murder. The price of illegal drugs has not gone up to reflect diminished supply but actually over the years has reduced somewhat.
Because so many more drugs are sold, profits for the criminal syndicates grow arithmetically.
We are twenty years fighting a war in Afghanistan that scarcely anyone thinks we won. Do we hold more or less territory? Do we have more or less political control?
By any metrics we have lost both wars.