Wabi CEO Eugenia Kuyda on what makes someone exceptionally effective: "There's a great quote I think from Ben Horowitz — these 'value-add' VCs that give advice like 'hire A players.'" "So of course you've got to hire A players, but what does it really mean to be an A player?" "Insane sense of ownership and agency." "You've got to have people that think and act like co-founders." "That's why ex-founders are great. We have 7 or 8 founders on the founding Wabi team. Because they just want to…