The thing about chapter releases is it's a proven model for when you want to sustain a fandom over a long period of time. Each individual release rallies the fandom which then creates fan content and speculation for the times between chapters, and it doesn't have a terribly high startup cost since you can just make Chapter 1 as a trial balloon then get the rest of the game greenlit if it's a success. It was probably done sometime earlier, but the first high-profile example I can think of was Bendy and the Ink Machine back in 2017.
Regardless, I'm glad that some corpo suitnigger somewhere told Tony that 4 years between chapter releases is unacceptable, and that he's gonna have to speed things up for Chapter 5.