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Comment by uxp100 | Hacker News Reader

That’s not really casinos in the same way as apps. Casinos find the other side of the bet for you and take a cut. They make money in transaction costs. They profit either way, but don’t cut you off for winning (at the sportsbook, other games may be different). Apps sometimes are taking the other side of the bet themselves, and thus will cut you off for winning.

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Yes, however casinos don't need to expell winners*, as the games are already rigged in the house's favor. Slot machines are set to give back 80% of the money invested, the dealer has a small advantage in black jack, etc.

* If you start applying the martingale to roulette, you will quickly be pointed to the exit.

> the dealer has a small advantage in black jack

Yeah, but if you try to "count cards" (i.e. actually utilize probability to play effectively) they'll throw you out. The parent comment is right that this is basically how all gambling against a business works. I'd totally be in favor of them all being illegal, but I also doubt that it would be feasible due to most people not sharing this view; it would probably go down about as well as prohibition (which ironically is also something I'm one of the few who would be relatively unaffected by given that I don't drink).

I wonder if some of you who leave these random observations have ever even gone into a casino, or at least in the last decades. In most modern casinos, card counting doesn't work anyhow and the casino doesn't care either way if you try it or not..

I've never seen anyone kicked out for martingale. They don't need to because they enforce a min and max bet. Also 0 and 00 everywhere

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