Speaking with What They Play, Junichi Masuda, the Pokemon series director, said: ““At this point, we’re not thinking of going in that direction [of creating a Pokemon MMO]. Trading is a core concept of Pokémon. So when you’re trading, you meet with a friend and decide which one you want and which one they want. I would like to emphasize real-world communication. You don’t see each other online”
Some reasons which can be considered a bit dubious, but if they’re for real, then I doubt we have no other option but accept them. However, it’s still strange – not just that a well done Pokemon MMO would have great deals of success from a financial point of view, but it would also be a dream come true for all the fans of the franchise. So hopefully Nintendo will soon think again about a Pokemon MMO…