Sorry to hear about the challenges your family is facing rn because of your brother-in-law's gambling addiction. He should take the consequences of his actions. Rehabilitation is a good step to address his addiction and hoping he'll be rehabilitated soon. Rehabilitation is helpful for him to be enlightened of what he did and maybe encourage him to seek employment. Hoping that his family will work together, have open communication with him, support and will be able to convince him to participate in support groups or programs for individuals with gambling addiction that will help him recover.