That’s a good analogy. But it misses an important component; Every one of those convention attendees is fiercely competitive with each other. Some are even in a state of war with others. They all have different races, religions, belief systems and they all face drastically different domestic challenges. So yeah, while they may all work in the same industry (so to speak) they are hardly likely to be working together towards some secret nefarious common goal. Not to say that you were implying that, but many do. Anyways, I really like the trade show metaphor.