Once upon a time there was ___.
Every day, ___.
One day ___.
Because of that, ___.
Because of that, ___.
Until finally ___.
Pixar movies are "nobody becomes somebody due to external event". That's a common pattern, beaten to death in the Star Wars franchise. But it's not the only pattern. It's not Game of Thrones. It's not Star Trek. It's not even most winners of "Best Picture" Oscars.
Pixar, StarWars, Lord of Rings, Harry Potter and virtually most other big banners use "nobody becomes somebody because they were already somebody" formula. Give it a close look and you will find lead characters in these movies didn't actually worked for their super powers or earned special status. Luke can become Jedi not because he worked for it for his whole life but because he was born that way. They were already special but put in difficult circumstances which made them not look special. But eventually they overcame and their "specialness" poped out anyway. People identify with this template because everyone thinks they are special and supressed because of external circumstances. Movie with a message that you are just as normal as anyway and you have to put years of grit to be successful - this typically doesn't go well with most audiences.
Toy Story? Cars? Inside Out? Up? Coco?
None of these follow that template. Sure, some like a Bugs Life and Rattatouille follow this, but in quirky ways. All conventional narrative structure involves an external incident. That sets up the central conflict of the narrative.
Disney movies like Big Hero 6, Moana or Frozen are more likely to follow it, though again, there’s a lot more craft in the story and surrounding context than the base structure suggests.