Having a false hope to win in gambling to use it as source of income is such a dangerous adventure. Your friends are going to eventually see themselves lack money and owe debt to people for having that high hope to make wealth with gambling, nobody should depend on gambling for income as it comes today as winning and the next day you are losing more than you have won. In fact, a continuous losing get you destabilise that your emotion will not be stable for healthy and proper gambling decision of playing as you can bear losing. You will want to gamble more higher stake if you are losing just because you want to recover loses.