It often stops being creative.
Ad agencies are some of the most conservative organizations you'll encounter. They've been so trained by fearful clients, they censor themselves regularly.
Successful authors are pushed by concerned publishers to become more true to their genres.
And the movie industry… well, it's an industry first.
This is why so many bestsellers are surprise bestsellers. In the words of William Goldman, no one knows anything. But, even though they don't know, the industrial protocol demands that they act like they do. Shareholders hesitate to give bonuses to CEOs who say, "I don't know, let's try it."
If you want to be creative, truly creative, it might pay to avoid a job with the word 'creative' in it.