As if all the other departments are un-creative. Come on now. And it's easy to understand why they call it copy. I'm sure it didn't take a lot of digging. No, I'm afraid that ad people are no more creative as a group than the general population.
Creativity is found in all walks of life.
A federal judge who hears cases around a conference table in his street clothes. An irate consumer who bills annoying telemarketers 100-dollars a call, and collects. A Wall Street executive who writes funny memos. The food historian who can reveal your genealogy if you tell him what you ate for Thanksgiving dinner. The magazine editor who models her management style after Daffy Duck and Catwoman.