in gaming, cash flow is constant. The lucky guy gets a large amount while the majority wait for the star to come out and shine brightly!
who knows who will hit big?
The ball is round and it could roll into the right slot!

So, the more punters go in, the more cash flows in! But the bankers also take a risk if punters strike in the early stage when the bankers have set a guaranteed pay - out, they lose!