I have heard stories of the Indian casinos being corrupt, in that, when a customer hits a large jackpot on a slot machine they will claim the machine “malfunctioned” and refuse to pay up.
I won $6300 on a Dragonlink machine last yr at my local Indian casino. That same night hubby won $3500. Indian run casinos are highly regulated and the scenario you mentioned is an anomaly. If what you said is true, casinos would have no customers at all, which is a terrible business model.