A chair's function is not just to provide a place to sit; it is to provide a medium for self-expression. Chairs are about status, for example. Or signalling something about oneself. That's why the words chair, seat and bench have found themselves used to describe high status professions, from academia to Parliament to the law.
I've always been scared of advertising folk. I've met them at parties and I've been to their offices and I've always found them intimidatingly cool. At one company I visited, they held their meetings in a caravan that had somehow been installed in the place, a rather more exotic place to gather than the typical BBC glass box.
The new industries are brainy industries and so-called knowledge workers tend to like to be near other people who are the same. Think of the City of Hollywood. People cluster. This means you have winning regions, such as London and Cambridge, and losing regions. The people who want to be top lawyers in Sunderland are hoovered up by London.