Similarly, Bob Shaw (science-fiction writer) says he likes to discuss story ideas with people - but he discovered that if he has a good story idea, and he tells it to someone, it satisfies some of the story-telling energy, and he has less motivation to actually write it. I'm not sure if that has the same root as ego satisfaction (is "story-energy" having something great that you thought of? maybe); but it contributes to the same result.