Ayn Rand couldn't get the movie of Atlas Shrugged made, nor could a long succession of people who followed her, so I'm not going to be surprised by bad reactions and reviews.
The movie is probably going to suffer from the fact that everyone who read the book has strong feelings and ideas about the subject matter. I myself have the book in my head and am sort of split on whether or not I want to see the movie or not.
So many people are disappointed when their favorite books have been made into movies. Books to movies invariably makes a lot of people really angry. For every success, like Watchmen or Gone with the Wind there are dozens of stinkers Breakfast of Champions or The Hitchhiker's Guide to the Galaxy. That has nothing to do with politics and everything to do with how we feel and think about books and characters.
Those who haven't read the book haven't either because the subject matter doesn't interest them or because the book is very long and is seen as boring, or because they are actively opposed to the message.
Atlas Shrugged has a lot to overcome to be a success, but I do hope people go to see it.
That's one big head!