The Los Angeles Times has several articles on Science Fiction. One of the features is a photo gallery of "13 upcoming remakes of Hollywood sci-fi classics". The purpose of Hollywood of course is to provide entertainment. Remakes of popular movies may be sure fire hits. But I have a question, why are remakes being made instead of making movies based on stories that have not been filmed?
Of course, that does not mean that new content is not being produced. As I was writing this a commercial came on the TV regarding the Chronicles of Narninia: Prince Caspian.
Could copyright have anything do with the lack of written content moving to film? That licensing a written story for movie production is now too complex and expensive? I don't know. This is pure speculation on my part, but I would think that Hollywood would be craving new content rather than recycling old content.