You are right customers are not getting rich from sports betting, but the true reason is that once 'the house', the betting company sees a consistent winner, it will ban them or lower their betting limit to discourage them from betting again. There are people that would get rich otherwise. Also betting companies are coordinating their odds to prevent arbitrage.
And also, of course: there are gangs influencing the outcomes of the sport events and selling the bets or organizing betting on them. Fraudster bosses, if they are smart, are absolutely getting rich. And betting company owners too. But you didn't mean those.
And also, of course: there are gangs influencing the outcomes of the sport events and selling the bets or organizing betting on them. Fraudster bosses, if they are smart, are absolutely getting rich. And betting company owners too. But you didn't mean those.