I think in casino games like roulette, the payouts for each bet are typically set based on the odds of that bet winning. Some bets, like betting on a specific number or combination of numbers, have lower odds of winning but higher payouts if they do win. Other bets, such as betting on red or black, have higher odds of winning, but a smaller payout.In poker and other card games, the casino may take a percentage of each pot or charge players a fee for entering a tournament. This ensures that the casino makes money even if players win.