I've said before (The W) that I don't think online gaming is all that important to the current crop of console's sales. Here (gamesarefun.com) is an editorial that agrees with me. I'll concede that some of the points sound like whiny complaining (its too hard/expensive to set up a home network), but they are all legitimate reasons why its only the hardcore gamers pining over any lack of online content, and not the gaming masses.
Online play should be handled the same way as wireless networks for your average computer. At least as far as I've heard, that's how Animal Crossing's going to work. Announced during Satoru Iwata's keynote (ds.ign.com)