They don't keep their patience. Once they start losing money, they become more desperate and invest more and then again face another loss. This continues unless they spend all of their money in gambling. I really feel sorry for those who take gambling so seriously and are addicted to it.
Losing patience can happen to many gamblers, especially new gamblers who don't have much experience and don't know about controlling themselves in gambling. Controlling ourselves will be important to hold ourselves from losing much money, and we can prevent it from addicted to gambling. Maybe we can see some gamblers losing control in slots and dice, which makes them lose their money.