Yes, of course there are few such cold-blooded players compared to those who play with passion and too much emotion. But on the other hand, if a person experiences virtually no emotions during the game, neither positive from winning, nor negative from losing, then a reasonable question arises - why should he gamble at all? This turns out to be just a waste of his precious time, and nothing more, and of course he will also spend some money that such a player will lose. If you think like this, then it turns out that such players are not at all attracted to gambling at all. Apparently that's why there are very few of them. Another question is when a player still experiences strong emotions, but knows how to completely hide them from others. He hides them to such an extent that people around him generally think that he is completely indifferent. But these are already certain abilities and the character of a person is manifested in full force here.
Maybe he playing gambling in his free time and not trying to chase the winning. He will not playing gambling too often and only in his free time so he enjoy his time to playing gambling. When he playing gambling, he knows that he should used money he can afford because he can lose much money if he can't control himself. No one will knows when he will lose his self control and if he doesn't learn about self control, he will lose his control shortly and will not realize that. In gambling, someone must have good controls to avoids the losing money because playing gambling can caused someone forgets about his rules and will not try hard to control himself. If someone lose his self control and also lose his money, he can spends more money to recovers his lose money and will not thinks about his lose will increase. If someone still do that, he will not win the games because his emotions becomes high without thinks that gambling is not a place to make money.