So you want to write a movie about Marilyn Monroe. Great. But why should they make this version of her story? You want to write a new Spiderman movie? Great! But why should they make this one? It's already been done so many times before.
Whether your story is a Best Adapted Screenplay or a Best Original Screenplay, we want to see why this particular movie deserves to have 10-1000 people working on it, $10K-$10M spent on it, and 10-10M audience members watching it.
If you're remaking Spiderman, let's see a new take on it, like Phil Lord did with Spider-Man: Into the Spider-Verse. If you're writing another movie about family dynamics (see: a gazillion movies made in the last 100 years), let's see a new relevance put on it, like Lisa Cholodenko did in The Kids Are All Right. And if you want to write yet another coming-of-age movie, have it be about puberty and an adolescent girl who turns into a red panda like Domee Shi did in Turning Red.
If you're Steven Spielberg and Tony Kushner, your script will still get traction even if it's just another story about a boy growing up in a dysfunctional house and wanting to make something of himself.
But if you're you (no offense) they need to see something special.