I think I've had the luxury to witness an 'everyone is equal' society without really having to suffer from it. I was 16 when the system changed in the East.
Greed is not the right word. Success is. We have abstract thinking, so, different to animals, it's not only about the material world. It's about who get's the hot date, who is captain of the team, who gets to be the boss and tell others what to do (regardless of pay), who get's the best seats, etc. You cannot manufacture this, so it's not a matter of technological advancement.
People are competitive and to think otherwise is naive. Education and experience can teach us to control it and be 'fair', but capitalism and market economy are, effectively, the closest we've come to replicating nature. The rest is ideology, which is a weird word as the ideas are there, but not the science.
Back on topic - there's a real need to reorganize/upgrade the forum, isn't there? Some separation of topics will definitely help, maybe some of those can be designed to be 'positive' :) - EOGs, Best Stab (whatever that might mean), etc. will help. Also, the educational part of the site is really basic - and only covers the moves - people start playing without having any idea what the purpose of the game is.