Man kind is by nature compettitive, this is why capitalism works, it feeds off competition, who has the better job, who has the better product etc, if competition is removed then so is the incentive to be the best, and thus progress is slowed.
At some point people decided they could do better than a cave, and made huts and tents, then others decided they could do better so made houses then we moved onto increasingly bigger and better buildings all diven by trying to be the best. If everyone was content with what they had we would still be sitting in caves thinking 'well this is nice'
Capitalism and Communism being opposite can hardly co-exist, and there are few examples of communism acctualy working, for it to come even close it would need to be world wide 'workers of the world unite' was a slogan for it at one point. But even then 'some are more equal than others' those in power will always want more and those in power rarely want to give power up (yet a key point of communism is the removal of class's and government). Also if everything is divided evenly, a cleaner working a few hours a week gets the same as a surgeon working 14 hour shifts 6 days a week, then why would people shoot high? Theres no point to try to be the best because you dont gain from your extra work. So production and the number of people in high-end jobs will drop drastically.
Besides, if you want to overthrow capitalism that is dominant over most of the worlds surface then you will need to 'open the eyes' of literaly billions of people, a subforum in a tiny little MMO is hardly going to make an impact in the grand scale of things
Dont get me wrong, both systems have their evils, there is no denying that, but Id rather stick with the bent-but-working system than gamble on one that has had little testing and less success.