If they are skilled, it is because they learned it to the point of mastering it well. If it is luck, we can only wait for it to come, and it will not come to everyone. Only certain people can get their luck. Successful gamblers may own their casinos, but they hide their identity as casino owners and enjoy their lives peacefully. There is no point in showing off their success because that will only make them enemies.
And it is true that behind success, there are sad stories experienced by each successful person. And if they can learn from the mistakes he made along his journey to success, he will be a successful person. Successful gamblers also learn from their mistakes to become successful gamblers.
It is always luck, and the odds are against the gambler.
In the rare situation that a gambler ends up winning a large amount, the casino will be quick to give them food and drinks for free so that they stay for as long as possible.