Hollywood is ruled by business; business relies on what safely works and not on what might work if given the opportunity. What works = Easy Money. You get the picture.
Perhaps the only exceptions to the rule is when a very important/famous/whatever actor/director/writer/etc. suggests a clever idea in which you'd have to be complete moron to ignore; from there, the rest safely jumps into the bandwaggon that said person created (if said idea actually worked of course).
To quote Fry from Futurama when it comes to the audience:
Quote: |
"Clever things makes them feel stupid and unexpected things makes them feel scared." |
That being said, take a look at this article:
http://www.cracked.com/article_16258_5-awesome-movies-ruined-by-last-minute-changes.html
And on a less depressing note, take a look at this video:
http://www.escapistmagazine.com/videos/view/extra-credits/1923-Innovation
Yes, he's talking about videogames, but most (if all) points he brings up do apply to all sorts of media that should be utilized.