It surprises me that more experiments run on game data don't seem to hit the mainstream. Perhaps I am looking in the wrong places, but I've seen only a few research reports based on ingame data and those are hard to scrounge up themselves.

Video games are one of the great crucibles where everyone is born equal by default - and yet we have massive variance in wealth distribution by the end of it. You always have a select few who end up with enough power and own all the wealth.