I think so. I mean there are some overlaps for sure, some people who gambled with regular fiat currency also started to move to crypto currency to gamble, that is for sure however I think people like me who never gambled with fiat currency in their life also started to gamble thanks to bitcoin (because of bitcoin? ) Hence I think even tho there is an overlap between the two types, the number increased considerably because of people like me.

Not sure the number is too big to actually make a dent in casino business because they are making billions of dollars each year but places like primedice has been around forever and have been making a bank without any brick and mortar place, just a website.