I spent 2 years doing casino revenue audits. The amount of money the high rollers would loose in one night was disgusting, we are talking 7 figures.

What blows my mind the most is how the math works out in the long run. A $1 slot machine could have a $100,000 prize but you would have to play it 200,000 time to hit the jack pot. You don't play against the house, you just give them your money.