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.
It's really a recipe for disaster if you will use your hard-earned money from your day-job and the money you generated from selling your valuable things. This is because in gambling, winning is uncertain. Anything isn't guaranteed. You might win today and lose big time tomorrow. No one can truly predict hundred percent what the outcome will be. Which is why it's necessary to gamble responsibly and to gamble with discipline. Moderation in betting and playing is essential so you won't get addicted to it. Because once you get obsessed with gambling, you will crave for it until you can no longer control your urges to play and spend.
If your family will go to an extent that will make you feel shameful, most probably it's because that's the only thing they can do to make you stop. Although I'm not really condoning that kind of act, especially threatening the casinos, but they might have been so desperate to help you quit gambling if that's the case. And it's so awful to witness that, I hope addicts will realize how much of a burden they are to their loved ones especially if they can't take after themselves.