Definitely the casinos because if they're not winning then casinos would've been a thing of the past plus most people that get into casino business are devious people that wouldn't blink or shed a single tear even if someone were to bet their whole life savings to a bet that they thought is going to bring them the win that they've been looking for in awhile now. Maybe on an individual level, we can say that gamblers are winning more but in terms of profitability in gambling, I'd say that the billions of dollars that the casino owners is enough to settle the debate on which side always wins, there's a saying that the house might never win always but it will almost always wins eventually.
For me, I will say both the casino and the gambler because if both of them are not making money that is why casinos are still available and gamblers are also gambling they are both benefiting from each other and it is good that way because aside gamblers benefiting from casinos, the society is benefiting because they are paying tax to the government and the money is used to establish something that will benefit the society, but people are always fond of misusing everything that is the same thing that is happening with gambling, they misuse it in the sense that they want to make money from it at the expense of losing everything and they don't even care, all they want is they want to make money from gambling. casinos are making money too in reality and at the same time people are winning and people are always losing and people that are losing are more than people that are winning, so to me, everyone is still benefiting my problem is that are addicts.