I'm not trampling over anybody in a stampede to the iOS store, and also I'm staying at Win32 and ignoring WinRT platform completely precisely for that reason: lack of developer freedom.
I'm pretty sure that Microsoft will drop entire WinRT thing someday, or there will be alternative Win32 implementation from other vendor. As for WinRT, they have invented a lot of similar toys last years, played them for some short time, and abandoned them.
In any case, Win32 code base and user base is too large, so this platform will be supported in some way for the next 50+ years.
They're fearful of malware and battery-sucking-always-running services and apps like some Android apps.
This way, they start with a clean slate on WindowsRT and Metro apps and then maybe relax some rules