An interesting point (especially the last line) - I agree that one extreme is certainly misleading. However, to the same point, an original concept may not necessarily require the moderation of an alternative entity to be delivered in its ideal form (as you mentioned is the case for a small minority of director's cut films). Considering the examples you give, I see two possibilities; either the numbers are in favour of most artists (ranging in skill) usually requiring additional moderation for a finely-honed final product, or most artists lack the skill to sufficiently hone their own product.
Personally, I am of the opinion that Tom Clancy, JK Rowling and Stephen King aren't particularly seminal writers, and Michelangelos are as rare in the realms of digital art as they are in the realms of fine art. On a positive note - should he/she ever appear, I don't think the restraints of corporate ideology would be sufficient to hamper their final product.