If we are talking about money where it's be sensitive to expose all the winning here, I think it could be hard to know and find a member who won and lives with sports betting. I often to see members who always prove the sport winning but rarely to see prove how much money has he won. then I believe a few of them live with that but it's not as the main job.
Only what may likely happen is a person that is rich that got no other way to make money than to be gambling and lost all his money and become poor. If you have money, use it for other things like businesses that can be profitable instead of using it for gambling. Just like you said, it is hard to see someone that will be living with gambling, that is not possible because that person's life is in danger. Gambling is not for any other thing than having fun but some people will take it to extra level of using it to make money and which can lead to a regret.