Picasso and Dali were relentless self promoters. It seems to me that megalomaniacs are criticized by their jealous contemporaries, then reared for their daring achievements once they are safely dead. Advertisers see him as a two headed monster. If they even dare to get involved with him, he invariably gives them something they really didn't think they wanted at a price they definitely couldn't afford, until the rest of the industry tells them how fantastic it is, and wished they too had the nerve to do the same. If there was one master director he wouldn't last very long, they all become flavour of the month at some point, until everyone else plagiarises their ideas.
Most advertising agencies put profit ahead of people.
Its common for the uncommon. Expect the unexpected and never say never. Give me three common traits and three things often said by people in the industry. Depends on the programme. In general I'd say No.