...who are the ones generating the most revenue for the gambling industry and its owners, the people who gamble only for fun or those who gamble both for fun and for profit, all the rising population of gambling addicts?..
For the gambling industry, it doesn't matter who brings them income, the one who plays for fun or the one who plays for the sake of winning, as both end up leaving their money there. But I think there are a lot more people who play for fun, although they also have the same goal of winning at the casino.