I think the Achilles Heel for .NET is Windows - the only way using .NET to develop makes any sense is to use Visual Studio, and to use Visual Studio, you need t

I think the Achilles Heel for .NET is Windows - the only way using .NET to develop makes any sense is to use Visual Studio, and to use Visual Studio, you need to use Windows. And that's a hard sell for a lot of people - most people in the startup scene use Mac OS X or Linux, and one of the reasons why is contempt of Windows. In many ways, .NET is better than Java, but I can't seriously consider using it if it's tied to Windows.