In other words, it was also a failure. Lastly, one of the reasons why there is a relative monopoly in beer and other liquor production has to do with who survived the prohibition (again, it more or less killed small scale production in America) and remnant archaic laws from after the repeal of prohibition. read more
This might not be the answer you wanted, but this is the answer that follows historical evidence: it didn't. Prohibition severely hurt US society. The prohibition helped allow the black market liquor industry that funded the mafia. It also destroyed many small businesses. read more