Arc, how do you know? How do you know that enough people don't have enough sessions when -- at some point -- they were "up" enough to offset the negative games they were playing over time?

I don't know. But I look at surveys that show that something like 90% of players said they were ahead at some point during their trips, yet 95% leave as losers. What if the mindset of casinogoers changed so that they all quit when ahead, even by just one dollar? What would happen then?

The casinos spend gazillions of dollars to try to insure that we don't stop playing when we win.
They hand us cash or even ask if we want tickets when we get a hand pay. Why not a check? Because checks don't go into slot machines.
They ask us to play the machine again after a handpay to clear the jackpot.
They say "do it again" as they give us the handpay.
They hide the exits.
They flood the casinos with signs and lights and sounds of "winning."

The issue isn't do people win -- the issue is can people stop after they won.

The issue is not one of math. The issue is one of psychology. People do win playing negative expectation games. But can you make them stop after they won on this trip, the next trip and the trip after?