Have you ever thought of donating the gambling profits to a charitable cause ? Sometime people won a big lottery or very high amount of money from betting & gambling games. Do you ever thought of being generous and helping the poor with this money ?
From my personal experience and understanding, I have seen people get into gambling when they are in sheer need of money and facing a financial crunch or simply want to earn more to fulfill their desires. I don't really think anyone will donate their winnings and rather spend on family/Friends if not completely on themselves. Nevertheless, donating would never hurt but I personally would help the poor get a job rather than just giving him easy money.