You remind me of people who don’t read and yet think short stories are easier to write than novels.
To write either a short story or a novel requires only months or years of effort by a single person. Movies are completely different things. Movies require financing and that in itself is a major undertaking. Directors are like generals planning military campaigns. They need to worry about logistics, timing, equipment, location, expenses and so on. Small movies don't require nearly as much management effort, meaning that sheer artistic vision has a better chance of shining through. Peter Jackson should leave the small movies to the up-and-comers.