Great question...but the answer is easy. Many ex-poker and casino cheats do exactly that, and I'm not just talking about cheats who retire to go on to careers consulting to poker rooms and casinos in the areas of table game protection and anti-cheating. I'm talking about ex-cheats moving into fields that have nothing to do with casinos and poker.
One profession where ex-casino and poker cheats fare quite well is that of practicing law, often big-time law such as Wall Street class-action suits and big-business mergers. Why is this? I think it's because that thrill of pulling the wool over someone's eyes exists in big-time lawyering just like it is when cheating casinos and poker tables. Case in point is a friend and ex-casino cheat partner of mine who was involved in winning a seven-figure settlement for his client who was injured due to negligence--in all places, a casino! LOL but it is true. I cannot mention this person's name but can assure you that in the courtroom his "claim" was as effective as when he was claiming a pastposted bet I slipped in on a roulette layout.
I guess this avenue of success after a life of casino and poker cheating comes from the fact that people who do cheat in casinos and in poker games are, whether you like it or not, more intelligent than the average honest person or gambler. Please don't get pissed at me for saying this but it is true. In no way am I saying that ex-cheats have better chances for success in honest fields than anyone else, only that strong mental acuity sometimes leads to wanting to win via the shortcut. In fact, there may be some form of character defect that leads a person down the path of cheating at poker and blackjact. In my case, it started as degenerate gambling and evolved into cheating when I realized there was no other way of "earning" money in casinos except for counting cards in blackjack and other advantage-play tactics. But I never had the patience for any of those...could be my own character defect...