Ask HN: What happens to startups with legitimate A players?

I've worked at half a dozen companies over the course of a decade, and at each one there are 2-3 guys who are head and shoulders better than everyone else. I'm wondering what would happen if you stuck 10 of these "A" players in the same room for 3 months? And no, the ivory tower mouth breathers at google/amazon/apple don't count as "A" players.