I think it's best not to advise people to try gambling or betting as way to improve their financial situation.
Because it partially puts the responsibility on the one who makes such advice and at the same time, not every person can control himself well in gambling.
I just think that psychology is full of people who are in a borderline state between control and lack of control, and the appeal to them to try gambling will end up in them learning a lot about themselves.And most likely, this will happen in an unpleasant way.