I think the dealer's advantage is a significant concern in gambling, particularly in games like blackjack, where the dealer has a higher chance of winning if players don't play their cards optimally. The dealer's advantage is built into the game's rules and is used to ensure that the house or casino makes a profit over time. In addition, the dealer's advantage can be increased by altering the rules of the game or utilizing techniques like card counting, which is considered illegal in most casinos.