That is some tricks from the casino that won't allow the gamblers to stop or leave the casino. They do that by secretly, so we don't feel anything and don't know if they trick us. That is why we need to have control while we are playing gambling, and we need to determine by ourselves how long we can play gambling. When you play for a long time, there will be difficult for you to stop the game before your money runs out.
Those tricks are very old but that does not mean they are not effective, another trick that I have seen casinos employ is that if you are betting large sums of money they will offer you all the drinks and food you may want, with the idea to keep you in the casino and in the case of the drinks to lower your ability to think in a rational way, that way you are more likely to lose money in whatever game you are playing, this is why when you go to a casino you should never carry with you more money than what you are willing to lose otherwise you could wake up the next day lamenting all the money you lost.
I think not just food and drinks, and they will offer other bonuses to us so that we will stay for a long time in their place. When you get drunks, it will be easy for them to keep you playing gambling without thinking that is enough for you. You can not deny what they want if you are drunk because they make you drink so many glasses or bottles.