At some point people become chemically dependent on alcohol so it's not necessarily an issue of inebriation. There's an upper limit based on blood alcohol concentration. Within the top 10% there are probably even more extreme drinkers than the average of 71 drinks a week.

The irony here is that these folks consume 60% of all alcoholic beverages. These are the whales of the industry. Makes you want to rethink the adult drinks market.