“WinRT is closed to prevent developers from shipping apps directly to consumers without Microsoft approval, so we greatly prefer unrestricted desktop win32 subsystem.”
So what, if it’s a closed platform? Epic does support building to iOS, right? It’s like building for Mac desktop versus building for an iPad. I would seriously love to publish my touch-based, graphically rich games to Windows store to be downloaded by Windows 8 tablet users and a regular x86 downloadable to be played with a keyboard/mouse. Publishing to Windows Store also ensures a nearly piracy-free ecosystem.
Lastly, do you plan to support Windows phone?