According to a report, the global online gambling market will reach $127.3 billion by 2027, with a compound annual growth rate of 11.5% from 2020 to 2027. Gambling is a game of chance. However, some games like blackjack with low house edges have better odds than slots and roulettes with higher house edges. How Casinos Make Money? Casinos make money by offering games to users. They expect to receive a certain percentage of profit from the funds that users deposit to play games. Several key terms are essential to take note of regarding how casinos make money. #1. The Handle