I've seen case scenario where people make good profits and never visit gambling a again and already invested in other businesses and today are still doing well.
Most times people want the easy way to make money and gambling seems to be that way that's why most persons wouldn't mind to lavish a huge profit with hopes or getting a bigger one and that's one thing that also drags people to addiction.
I personally can quit gambling  after a huge winning bjt it all depends on the amount won because money worn are sweeter than money earned and that's one thing  that will  keep dragging people to gamble.