Because of a phenomenal success of the book, 20th Century Fox was sure that this was going to be a huge hit at the box office. At the same time there were such low expectations surrounding
Star Wars (1977) that most theaters refused to book the film. So the distributor at Fox came up with the idea of a package deal: telling theater chains that if they wanted this movie they had to book Star Wars first. This movie went on to become a box office dud while Star Wars went on to become one of the most successful films of all time.
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