I think it's sort of intended to be insidery. Everyone scratches each other's back. It's kind of similar to the dynamic of investors in hot tech companies, where people have a network of contacts they can leverage, etc.
Pretty sure that's actually a George Carlin line, from a relatively famous routine of his. Many, many clips, but here's a random one: https://www.youtube.com/watch?v=cKUaqFzZLxU