Price will influence where people buy their alcohol and what alcohol they will buy, but not how much.
Poor people are more likely to have alcohol problems than rich people.
Countries with high alcohol taxation have more problem drinking than countries with low alcohol taxation.
Raise the tax on alcohol and consumption may go up or down, meaning that other factors have more impact than price.
Add this together and you will see that price inflation does not work as a method of controlling problem drinking.
On under age drinking, I see an assumption that this is being done on cheap supermarket cans of beer, so I would like to make a point or two.
1. Beer sales have been in decline to over two decades.
2. Supermarkets are among the most compliant alcohol retailers in Ireland, with most insisting on an over 21 age limit and asking staff to check ID on anyone who looks under 25. I have seen this done a lot.
3. The beverage of choice for the young ne'er-do-well about town seems to be a bottle of something sweet and blue. When it comes to the hip teen about town, fashion has more to do with alcohol choice than price, as far as I can see.