The problem is that creating a "good" story isn't just coming up with a good storyform--and that's really what Dramatica is good at/designed to do. In addition to having a strong central argument, the next worldshaking story needs to demonstrate an engaging world, deliver fabulous spectacle, and speak to its audience in a novel and personal way. There's a certain "lightning-in-a-bottle" aspect to it, a inevitable unpredictability of what will rise as the next big trendsetter. Superhero movies are basically a joke, but DC makes Batman Begins, Marvel follows it up with Iron Man, and suddenly superheroes are the bread and butter of Hollywood. Pirate movies are supposed to be critical suicide, but Disney takes a leap of faith with their ride storification, and Pirates of the Caribbean sails through at least one good movie (followed by two mediocre-to-decent ones and two... less effective ones).
All Dramatica can do with these movies is nod its head and go, "Yup, those movies sure do have good arguments at their core!" But it's not enough. Batman Begins capitalizes on a more serious, gritty tone that was considered revolutionary at the time, while Marvel does the exact opposite and creates a feel-good, campy shoot-em-up with a strong personality for the lead. Speaking of strong personality, need I say more about Johnny Depp's portrayal of Captain Jack Sparrow? Frozen swirls catchy music and gaybaiting together with genre savviness and novelty; Ghost in the Shell cranks the philosophy and body horror up to 11; Harry Potter... well, Harry Potter deserves its own discussion on fandom culture, but basically Harry Potter was one of the first YA series to create a fandom that hooked in its readers and grew with them.
Don't get me wrong; the concepts of Dramatica are pretty clearly present in all of these stories. A story with no storyform beneath it is either a walking tour, a popcorn flick, or an arthouse mysterium. Looking at it the other way, it's very easy to look at a movie that failed to engage and find the weaknesses in the storyform, most commonly a weak or absent Influence Character. But looking at a good movie, even if it has a good storyform, that doesn't guarantee success. It has to speak to an audience at all the right levels, come out at the right place at the right time, and have that little spark of ineffable magic to take the world by storm. In the end, it's not a science, and there are no guarantees.