There is a reason why skill based games were not under the radar of gambling site owner's interest because they will lose their profits if people can use their skill and win a game.
Probability based games will be the choice of gambling sites so gamblers have to live with that.
The Casino won't lose profit if they let players compete with each other and take a commission on every game.
So always win situation for the gambling site.
In this kind of game yes, or any player vs. player game, Casino tends to be an overseer on a game like this.
Then I don't think much people will get interest in this kind of gambling even if they are they lose interest after playing 10 or 100 games but this will never happen with casino games.
And we cannot conclude anything when it comes to gambling games because different people have different tastes or like. One may hate one game but the other one might love the same game. So who knows when the player will stop, may it be on its 10th or 100th game or maybe they will stop after their first game or probably they can never have enough. Only the one who is playing can know not us.