Viability of C#/.NET as the new standard game dev platform?

Question

For a long time now C++ has been the dominate game development language. Many AAA quality 3D engines are available to fit any budget.

My question is, with the rise of X

Answer 1

Surprised nobody has mentioned the possibilities for a mobile gaming. I can't see any managed code competing with C++ anytime soon for the likes of Half-Life and Halo, but for less-intensive mobile device games it seems like it's got legs.