If I understand what you guys are discussing about correctly, I would say it's definitely better to lock up an addicted gambler physically, lock him up in a single room with a very small window, and take away every gadget from him, no phone, no radio, no nothing, just him and his mind to wander and think 🤔
Leave him there for like a month or two, I believe that by the time he comes out, he must have had a brain that has ressetted itself.
Locking his money won't be effective because doing this may drive him to go and steal from other people, or borrow, but note that in the absence no one to loan him money, the urge to gamble Immediately immediately may drive him into stealing, and this could land him in jail or possible end his life through jungle justice.
Like, how can you even say this? Since when has addiction become a crime and addicts criminals? They need help, not to be locked up in some room like they are insane.
Don't you know that we are social animals? We need the interactions with other humans around us to remain sane. Living a secluded lifestyle or being locked up in seclusion will only affect one's mental health more.
Instead of locking someone up for addiction, take them to rehab.