Microsoft loses developers by ignoring the installed base. XP held up WPF adoption, and Win7 will hold up WinRT. That's assuming anybody enjoys using it. It's s

Microsoft loses developers by ignoring the installed base. XP held up WPF adoption, and Win7 will hold up WinRT. That's assuming anybody enjoys using it. It's still easier to ship on Win32 and not worry about these fragmented versions of the OS. Also this is a tools question too: It's harder to make an app for two versions of Windows than it is to make an app for Windows and something else. The tools just don't make it easy to write conditional code.