The future of casual gaming, sure. That’s already true, I would say. However, there are a lot of games that are far better suited to be played on a couch or sitting in a nice comfy chair with a mouse and keyboard, and PCs/consoles are much better suited for that. If anything, the iPhone and iPad have only stolen the market from portable devices like the Nintendo DS and Sony PSP. “Real” consoles are hardly threatened.
While, Angry birds and Zynga brought large sections of population into gaming, their involvement in hardcore gaming is still minimal. I will possibly be downvoted for this, but the amount of research that has been contributed by hardcore game development companies far surpasses the amount that casual game developers have produced. There is a visible differentiator between the two segments of gaming - and it will probably always be there.
"Might" as in I don't know how these AAA game publishers are organised internally. If the console division of Capcom sees decreased profits while the mobile division sees increased profits [1], does that mean that people and capital can get reallocated from the console division to the mobile division?
[1] http://www.joystiq.com/2011/10/26/non-mobile-capcom-profits-...