The US Centers for Disease Control (CDC)'s Task Force on Community Preventive Services announced the decision and rationale for recommending against further privatization of alcohol sales. The website states, "Based on its charge to identify effective disease and injury prevention measures, the
<http://www.thecommunityguide.org/about/task-force-members.html> Task Force on Community Preventive Services <http://www.thecommunityguide.org/about/methods.html#categories> recommends against the further privatization of alcohol sales in settings with current
government control of retail sales, based on strong evidence that privatization results in increased per capita alcohol consumption, a well-established proxy for excessive consumption."
The Task Force finding, presented on the CDC website, was made in February 2011. It was based on a systematic review of all available studies, conducted on behalf of the Task Force by a team of specialists in systematic review methods, and in research, practice and policy related to excessive alcohol consumption.
The following link will take you to the statement and rationale for this decision.