Professional gambler huh? I think that's a term I haven't really gotten used to because it's just not something am familiar with or it's just that I don't really believe that some people are actually professionals when it comes to gambling and besides on what context are they even professional? Is it that they don't lose or they are very good with there are gambling habits . If am not mistaken, gambling is something that anyone can lose control and do something stupid even the so called professionals, it's takes just a bad decision.
I don't yet understand what professional gamblers are like, but I think that professional gamblers should be able to make money or be able to win consistently, but I doubt that. Even though they are professionals, I think it is impossible for them to make money or win consistently, because even though there is gambling that requires skill, it only increases the chance of winning but does not guarantee and it is not certain that you can win. Apart from that, considering that gambling is a business, there is no definite way to make money, because the host has of course arranged everything to be able to make a profit from the many gamblers.
It's true what you say, in what context can they be called professional gamblers? If you are good at gambling, such as being able to control yourself, in my opinion you are not professional but wise in gambling. Maybe if they can produce definite wins or profits consistently then they can be called professional gamblers. and also I don't believe there will be gamblers like that but what is clear is that there are wise gamblers but there are fewer of them than brutal gamblers.