They started to do that with TLJ. Instead of the main character being an orphan from a desert planet who happened to be the son of The Chosen One™, she could have been an orphan from a desert planet who happened to be the daughter of nobody special. Fans lost their collective shit over it...and we got Rise of Skywalker instead... And now the franchise is just going to get milked for as much nostalgia bait as they can because the studio learned that fans don't want anything even slightly different from what they expect. Good job! Gold star!