In defending recent changes to the iPhone SDK agreement, Steve Jobs made a general argument about platforms:

We’ve been there before, and intermediate layers between the platform and the developer ultimately produces sub-standard apps and hinders the progress of the platform.

Since iTunes for Windows uses non-native APIs such as CoreFoundation and CoreGraphics, Steve Jobs is effectively calling iTunes for Windows a sub-standard app.

Is iTunes hindering the progress of the Windows platform by not taking advantage of the latest native Windows APIs? By Steve’s logic, Microsoft should start banning apps such as iTunes from Windows.