But that depends on what kind of a writer you are. You're either the kind of writer that writes to a reader or you're not. So not all writers are affected by movies. Yes, I think something about this human medium of the grammatical sentence that lives on the page, that can be referred to, that continues to stand for what it stood for when you first set it down, and that uses the subject-predicate form to make an assumption about the world that can't be mistaken, there is something about that medium that will never be replaced by any electronic medium. Maybe you can broadcast that sentence on the screen and print it out on your printer but there is something about this literary medium that is the human medium par excellence.
Movies have some special effects capabilities.
You're absolutely right. Those are words on the page. And they make you conjure mental images rather than screen images. There is something about the ability of a writer to do that. The literary medium is so versatile and profound.