I don't understand. Why do people seem to think there can only be one mmo out.
With the upcoming release of SWTOR, people are screaming it will kill WoW and Swtor will takes Wow's place as the king. Why can there not be two or more good MMO's out in the market? Because in all honesty if there are two good MMO's out then that causes competition in the market, both games trying to attract players and keep them, thus, they will churn out better content to top the other MMO. So essentially if there are two good mmo's out there then the players win. Not only do they have more awesome choices in the game they want to play, but the games themselves will be better.
So tell me, why can't we have both mmo's, why does one have to fail and the other thrive?