I much prefer games I'm in to be a collaborative story, not really a "game", but I do understand that game elements must exist. For example there must be some sort of "game master" who pushes the story in a direction, a group of creatives with no direction might argue and write a sprawling mess! Also if everyone is planning the plot like a story, how can there be any drama? A GM is needed to thrown in some curveballs that the other writers don't expect. Surely?