The only thing that I can sell my properties for is Bitcoin, selling your things to gamble is sure to end in disaster for you, because you are betting all that money on luck, I can see that the man in the story of OP is a greedy man who only thinks for himself, that's why he won't listen to his family, they must have been telling him to stop for a long period of time before they decide to print out his photo and spread it around to make him stop gambling, the family are trying to safe themselves before the man causes more damages to their lives, my parents used to say that a gambler as a son is a lost son, as they believe or due to the past experience they have with gamblers, they believe that the son will sell everything for gambling.
Someone said this family went too far but I don't see how, if they don't stop him first he will do harm to them too, for someone who only have a house which he and his family are residing decide to sell the house so that he can gamble, where did he except his family to stay? On the streets? If he is living alone and he decide to do this to himself its better, maybe he want to sleep on the street homeless, but he shouldn't put his family in the same suffering.
I can't imagine the pain the family must have went through, this is a disgrace for them, it's a big shame and when they move out of their home every morning, they will have this feeling of embarrassment in them, as if people are all talking about them, I am sure that they must have use everything they know to make this man stop but as always, some gamblers always went too far, such people shouldn't have become a gambler from the beginning.
Look, spreading his photos around his street, like a lost person, wouldn't solve the difficult problem. He is struggling with addiction and this method can't stop him. By any means he'll be elligible to gambling outside his province. Inviting him to order, is the best tool required to fix a broken person. Although, it's not simple, as it'll need his cooperation. Reading the story, he failed to cooperate with his parents, and it led to a public disgrace of the young gambler. If they had a second thought, working on his resistant would solve a bit of his problem of avoiding them, if he did. Have a rethink on if the boy doesn't return home again forever. Who is going to feel the most pain? his parents of course, as relatives would flood them with millions of questions about their son's where about. It's indeed a shame, but we need to control our actions towards our wards. No matter what they do, they still are our loved ones. His parents are acting out of fear. The reason, because gambling has destroyed many homes. Their son is doing it already, improvising a solution as that as their all. Elaborates how unprepared they are in stopping the bad habit of their son. Investing anger on the boy, will only get them extra disgrace in future. Nobody cares if he wins big later, like OP said. What matters is changing him, first. After that, the family can send him to learn skill. Distracting him from any thought of moving back into gambling.