For which there clearly has been. Some people made the various sequels because they had a story to tell, some because there is an audience that wants more from the IP, some because they wanted a chance to take part in such a project, some because they saw them as an opportunity to share their particular craft.
Movie making is a massive group effort. I can assure you that there is not a single movie where the sole reason it gets made is for money. In fact, most of them go into the project thinking it’ll be a losing prospect from an accounting point of view.
Probably felt broken after the opening montage with the old man and couldn’t take anymore emotional torment. I can’t blame them.