Absolutely right. The only type of people who earn 100% from their intuition are psychics and fortune tellers. They get money for their feelings and emotions. And in gambling it is best to have money management and calculation to be successful. I do not exclude the influence of the measure of intuition, but you can not rely on it entirely because it is an emotion, and the one who follows the path of emotions and not reason is the one who is unlikely to succeed.
Those groups of people who claim to know the future are charlatans which equals to plain words, fraud. They should be identified and called out.
But here who are defrauding? Yourself if you think you know what the game's outcome is going to be. Intuition is useful in things that are not based on luck like skills based work and detective work. But when it comes to gambling everything has a luck factor in it and your background homework means nothing to the game.
For the gambling industry to thrive making such habits run is good for them, the more you try your "intuition" - you are essentially running with what you like, making the result same as someone without intuition.