When I was a kid it was big news when someone flew around the world in a little aeroplane, but nobody cared when I did it. Then, to rub salt into my wounds, the customs people ripped my aeroplane to pieces, looking for stuff. ↗
There's always a question of duration, there's a question of who the orchestra is. No one is free to write what you want - you collaborate on a film score, and one of the good things is that someone else's work is motivating you. ↗