Hm, I tend to see it from a different perspective. There are a lot of movies that just repeat what has been done before: James Bond always ends up with a bad guy who explains his evil plan in detail and then sets up an elaborate way to kill him from which he escapes, most of the superhero movies have been done multiple times, there are many different versions of every Jane Austen novel and Grimm fairytale. That is not a unique characteristic of Ocean’s 8 or Ghostbusters, it’s a widespread phenomenon. Repeating something that worked in a slightly different fashion is an easy way to make money. But in their repeating-what-has-been-done, film makers do take into account trends in the outside world. The Grimm fairytale princesses are not as meek as they once were (try watching Disney’s Snow White from 1947 without flinching), superheroes now have weaknesses and human emotions, even James Bond develops some depth in his character in later movies. And sometimes they redo the entire thing but then with a female cast. Yes, because that is a trend and this likely to make money, but probably also because it makes more money than doing another Ocean movie with George Clooney, because people are getting tired of that, they’ve seen it before.