When I was a kid, I used to read those books where, at certain points in the book, you'd be given a choice, essentially control over what the characters should do, or what should happen to them, and then each choice would send you to a particular page from which the story continues in the way you wanted it to.
This would make the story far more fun as I felt that I was in control, that I could avoid things happening which I had little interest in (for example, I hated romantic subplots as a kid, so whenever a man and a woman was involved, if I could, I always chose for the man to kill the woman!), and it also made me re-read the book often in order to try out different combinations of choices.
Why are there not more (any?) movies that are structured like this? For example, in the cinema, at each of these "choices", the audience in the cinema could be polled for what particular action (out of a set of choices) they'd want to take, and then the majority choice wins. And, if the movie is a DVD, then one could also easily incorporate a choice that needs to be made using the TV remote by each viewer.
It would be expensive producing such a movie, yes, but then again, we have movies that are being made right now that costs hundreds of millions of dollars, so I don't really think "expensive" is a dealbreaker, in particular if the movie works well and intrigues audiences (plus, the added benefit of audiences rewatching the film in order to try out different choices).
So, probably using "Why" in the question makes it seem like it's opinion based, but I'm looking for any solid information as to the genre and why it works or doesn't work, has it worked in the past and is there any indication it might work in the future.