Have they really killed it? There's obviously more casual gamers carrying mobile devices around, but but they weren't buying handhelds to begin with. Everyone

Have they really killed it? There's obviously more casual gamers carrying mobile devices around, but but they weren't buying handhelds to begin with. Everyone I know that previously used a DS or PSP for gaming still prefer that type of device over a touch screen phone for any sort of involved gaming session. If you have a link to research showing that core market has moved on, I'd love to see it.