In The Hustler as well as in the sequel The Color of Money what are the hustlers hustling?

In "The Hustler," the main character, Eddie Felson, hustles in the world of professional pool, using his skills to deceive and outsmart opponents for monetary gain. In the sequel, "The Color of Money," Felson transitions into mentoring a young pool player, Vincent, while still engaging in hustling by playing high-stakes games. Both films explore themes of ambition, competition, and the psychological games played within the world of billiards. Ultimately, they highlight the complex relationship between skill, chance, and the pursuit of success.