The top 10% of drinkers consume the majority of alcohol. Their average consumption is over 10 drinks per day, which I think clearly suggestions a problem. I think it's hard to imagine that losing >50% of revenue wouldn't matter to sellers.

Gambling is also very skewed. Studies place it something like 5% of in person gamblers accounting for 50% of profits or 1% for online gambling. I would guess for sports betting it's similar.