Mafoo, I'm telling you, this analogy does not work. The problem here is that you're putting down Gold as the primary measure of success in WoW. The problem this creates is two-fold:
1. While it is very much possible to obtain Gold by oneself in WoW, ventures made together tend to be much more lucrative, and the Gold-per-person-per-hour rate rises even if every person takes a smaller cut. Financially speaking, it makes the best sense to earn gold with your buddies and let the impartial system dole out the filthy lucre.
2. Gold isn't the primary measure of success in WoW. Loot - or equipment - is. People only partially go raiding for the experience of it, or to kill the boss or advance some kind of plot that no one really cares about. Far more often, people are in it for the loot. And that loot is necessary for high level play - PvE or PvP, your equipment makes you who you are, and your ability to obtain this equipment makes you more efficient at anything and everything. Now, unlike Gold, the best and most prestigious equipment is not necessarily obtainable in solo play, but it remains necessary in order to play at a high level in any portion of the game. From this, it can be assumed that the socialistic participation in high-level raids is necessary in order to be really and truly successful.
Now, strictly speaking, you do not need this fancy, almost-impossible-to-obtain-by-yourself equipment, but you don't need Gold either! This is another facet in which the analogy falls on its face: in a perfect capitalist society you need money, but Gold isn't used in order to obtain sustenance or shelter in WoW. You could limit yourself to functioning without Gold and still manage to get thirty thousand hours out of the game, which is not something that is especially possible in a capitalist society.
Keep in mind I'm not saying anything about socialism vs. capitalism, just that if you're looking for a game that exemplifies how capitalism should work, WoW isn't it. Nor is any MMO, when you get down to it.
Edit: Hell, wanna bet that I can make a better argument that WoW is actually a model for a Marxist utopia?
