Baloney.
Alcohol consumption was at its lowest at the start of Prohibition. Every year after that it increased. Prohibition "failed" because the people, as it turned out, didn't really want it.
That is not the case with drugs. The latest example of which I'm aware was the marijuana legalization attempt on the Alaskan November, 2004 ballot (where it's already legal to consume at home).
If failed by a wide margin.
The failure of a legalization initiative does not imply success of the War On Drugs ... strike two.