I agree with this 100%.  My own opinion is that the biggest myth is when VC talks about building team, they always talk about recruiting A players, with the idea that only A players could recruit more A players whereas B players would recruit only C players, etc. Having taught at UCLA for nine years, my own experience is that there are two kinds of A students. The first are nominal A students who on occasion receive A+'s and the second are really B+ students who on occasion receive A-'s. The A+ students tend to be extraordinarily smart but interestingly, most are also extraordinarily generous. They don’t worry too much about competition and they don’t mind others in their class also receiving A’s, doing well along with them. In other words, they have no problem sharing oxygen. The B+ students who work hard to get A’s are smart as well but they tend to be very competitive and in comparison less generous. In other words, they are passionate but not necessarily compassionate (like me). My experience is that they tend to carry more emotional baggage and they are high maintenance (like me). In summary, it is not enough to recruit A students. Unless they are generous as well, they tend not to be good team players.