Only thing I find wrong with these gamblers is misleading common people to think of luck. The popular ones have made millions and from that a small portion is being spend on fun/entertainment. These people never get into addiction, and even if they're addicted this won't make a big impact on their living. Common public just follow and try to be lucky, which at times make people end up bankrupt.
Well, mostly gambling sites and businesses will going to find an endorser who is popular and knows how to do this business. And of course, those popular and rich people who associated with gambling business are the one who have made millions, I don't think so if those big time gamblers are never get into gambling addiction and those small timer gamblers are the vulnerable ones because they believe on endorsers and trying to make a lucky day out of their gambling activities.