A drug addict can get better with rehab but a gambling addict can't get better with rehab because there are financial issues involved where emotions work harder. And it is this emotion that does not allow a gambling addict to quit gambling easily.
I don't think so, does that mean that it will be vice versa onto a drug addict? Rehabilitation is different in every case but I think it will work on gambling addiction as well as long as the patient is doing the work that they need to do. Though I don't tend to know how financial issue works on gambling addicts as what you stated.