The final decision is left for the gambler to make, anybody that goes bankrupt becoming of gambling chooses their faith, while they are gambling and losing their money consistently, they should have realised it to know that their money is going down and not increasing meaning that their efforts to make gambling become a sustainable source of income is not working and they should advise themselves to quit at that moment but instead they will continue gambling until all money is lost.
If someone personally makes a choice that they want to gamble, and do that for a living and then ends up losing all their money, that was their own choice and I think it's quite understandable as well. I get that it is not the best situation to be in, losing all your money AND your income, but someone who made the choice of doing this professionally has made that choice and we can't just change that. I get that it is not going to be easy at all to make it, but they are the ones who choose this life.
If you want to be a professional gambler then you will have to face the fact that you are going to lose a lot of money at times, and if you are lucky then maybe you would have some lucky moments and end up winning as well.