The reason film and music operate like this is because consumers have loyalty to individual actors and musicians. It is also very hard to imitate having a spec

The reason film and music operate like this is because consumers have loyalty to individual actors and musicians. It is also very hard to imitate having a specific actor in your movie. It isn't hard to imitate another developers application style, and I don't think consumers have too much loyalty towards their app developers. I don't see it happening.