I know what you're saying, but there's plenty of marketing behind alcohol, and it's already addictive to the point that withdrawal can literally kill you.
marketing doesn't make the product itself more addictive. Alcohol is physically addictive, but so is the dopamine hit you get from many social networking features. The point I was trying to make is that AFAIK no-one's trying to make alcohol the product more addictive, where there are many very intelligent people working to make Facebook the product more addictive.
Alcopops are a recent example of the alcohol industry finding a way to make their product more addictive (by adding sugar, another addictive substance).