That should've been a subject to discuss at Monsieur de Juniac's recent IATA conference. Stories like that appear at least weekly. How long and how severe an accident will it take for all airlines to ban alcohol onboard? What are they afraid of? That drunk idiots won't fly their airline? That's a big loss?
They forbade smoking on planes. Has anyone ever seen a smoker start "exposing" himself or harrassing passengers after he had a full pack of Marlboro? Yet, the substance that is KNOWN to cause aggressive behavior is still openly and legally sold or even served free onboard an aircraft in all tastes and flavors.