Notes on the Auteur Theory

I'm not sure I can believe that a director can be the only author of a film. I do believe that directors usually have stylistic ways of making their films, and I also believe that a film can reflect what the director thinks and feels. But what about the production crew or the screenwriter or even the actors? Don't they contribute their own interpretations and style to the film? For example, Tim Burton has a very strange, distinct flare to all of his films; he is constantly using Johnny Depp to act in his films because he also possesses a very distinct style of acting. Also, the director could not be the main author of a film if he/she doesn't even understand the technical aspect of film. They would rely heavily on others to make and interpret the film.
I find many similarities between making a film and owning a small business. My parents could be called the "directors" of the pumpkin patch. It is what they have put into the business that makes it what it is today; however, they are not the sole contributors to the pumpkin patch. They gather ideas all over the place: from family, employees, and other pumpkin patch-owning people. Then they put there ideas into production. In this way, a business can be a lot like a film. Just because a film has a certain style or theme that the director is tied to, it does not make that director the sole author of the film.