Hardcore Gamers are folks who spent most of there free time in playing/reading/writing/discussing about games. They also spend a lot of time competing or showing mastery of their gaming skill. In lot of ways they treat video gaming as normal sports.

Now how do i know hardcore gamers are abandoning wii? ok may be i'll write about that some other time. In the meanwhile think about what the aforementioned folks have on wii to stick around given that they do have a 360/ps3/pc loaded (by comparison) with things they want to play.