Point 2, as you say, surely the only meaningful reason is the fans, who they're going to trash anyway. Wrong. Egos.

That's billionaires for you. If it's not bigger than the biggest thing ever, then it's not worth doing. "Tolkien but better!"

I hear Elon Musk is going to remake 2001: A Space Odyssey, but he's going to change it to 2051: A Space Odyssey because clearly, those idiots, AC Clarke and Kubrick, got the date wrong.