I am curious to know if someone continually invested a lot of time in studying a game involved in gambling, further if he had played the game a lot to understand the intricacies involved, then can we call him an expert in that gambling game? If we do call him an expert then we clearly differentiate his experience and expertise from that of a novice. This clearly shows that the person is capable of winning more as an expert than the novice who really does not have the in-depth understanding of the play.
I still believe if we talk about gambling in games such as poker and sportbook because mental and mind factors really affect each game. different from games like dice, roulette, etc. which is based entirely on luck and even if someone wins in the first set of games and there is a factor in the possibility of him being tempted by the next set and the worst possible loss of everything. very likely . and that's what often happens.