There was more booze being spilled during prohibition than if they had just given them the stuff:
"But after prohibition was implemented alcohol continued to be consumed. Within a week after it went into effect, small portable stills were on sale throughout the country. [4] California's grape growers increased their area about 700 % during the first five years of the prohibition. Grapes were commonly compressed into dry blocks and sold as "bricks or blocks of Rhine Wine," "blocks of port," and so on. The mayor of New York City even sent instructions on winemaking to his constituents.
Organized smuggling of alcohol from Canada and elsewhere quickly developed. "Rum rows" existed off the coasts of large cities where ships lined up just beyond the three mile (5 km) limit to off-load their cargoes onto speed boats. Murder and hijacking were common in this dangerous but lucrative business.
There was also the notorious and ever-present organized bootlegging. The country's scourge led to massive and widespread corruption of politicians and law enforcement agencies and helped finance powerful crime organizations. In addition to the murders of law enforcement officers there was an ever more common cause of death and disability caused by the bootleggers' illegal products. Many stills used lead coils or lead soldering, which gave off acetate of lead, a dangerous poison. Some bootleggers used recipes that included iodine, creosote, or even embalming fluid.
The widespread corruption of public officials became a national scandal. In addition, it became very difficult to convict those who violated prohibition because public support for the law and its enforcement eroded dramatically. For example, of prohibition-related 7,000 arrests in New York between 1921 and 1923, only 27 resulted in convictions.
Prohibition proved to be counterproductive in that it promoted the heavy and rapid consumption of alcohol in secretive, nonsocially regulated and controlled ways. "People did not take the trouble to go to a speakeasy, present the password, and pay high prices for very poor quality alcohol simply to have a beer. When people went to speakeasies, they went to get drunk."
http://en.wikipedia.org/wiki/Alcohol_during_and_after_prohibition