making alcohol illegal is doomed to fail because you can't ever control its precursors. you can't ban or control the sale of starches and sugars because those are essential foods. potatoes, sugarcane, sugar beets, wheat, rice, and all other grains and fruits, they can all be made into alcohol. so unless you think you can force your whole society to go on a zero carb diet forever, you can't get rid of the means of alcohol production.
with weed this is different, it comes from one specific plant that also has virtually zero legitimate uses (no, 'medical' marijuana does not count) so justifying and enforcing a ban on it would be relatively easy.