After reading the book, Steal Like an Artist, I came to agreement that a lot of artist steal to become original.
They take bits of a lot of things they enjoy, and tie them into their own creation.
The key for creating my own IP (at least what I think now), is to figure out what you enjoy in Cinema, Books and games, then documenting it meticulously. This includes things that are funny, plot points, facial expressions, relationship between characters, etc.
Surprising to myself, is that the amount of notes taken is usually proportional to how interesting the experience was.