People, please do not try to compare World of Warcraft to any other MMO. Why? MMO's have an interesting social variable that acts as a feedback loop. Warcraft's popularity is partly due to is popularity. Yes the game has to be good, but once you gain a certain momentum people stay with the game because their friends stay with the game. You need a sufficiently large portion of friends to leave for another game before you will, even if you like another game better. This is why you sometimes see a mass exodus from games that don't gain momentum. Guilds tend to ban together and move to another MMO as a whole. Most MMO's have monthly fees which limits most peoples budgets to one game. Humans are instinctively loyal pack animals. We ban together in teams to increase our power. If you think about it hard enough, you can probably find at least one other MMO that you would have played if everyone in your guild switched with you. And don't forget World of Warcraft at release time. Remember the guilds that powered through Molten Core and then had nothing to do but stand around Ironforge looking cool? Many of them would have gladly jumped ship to another MMO, but options were more limited back then. Some even canceled accounts to save money and just waited for an expansion. Age of Conan might still survive, but getting WoW-type popularity means getting people to quit playing WoW, which means leaving friends and abandoning charters you've spent years on. It's a tall order.
