That might be hard to believe.
But I remember looking at data on liquor consumption and curious about what the 80/20 rule was on it, and I was horrified to find that the something like over 50% (correction, 90%) of all liquor is consumed by people who drink and AVERAGE of 750ml for themselves per week.
Alcohol sales primarily go to alcoholics. It's a truth we don't want to see.
EDIT: when I say "liquor" I mean vodka, whiskey, etc - stuff that is at least 80 proof/40% ABV. Not wine.