Microsoft (and other large companies, surely) has a huge problem dealing with issues where multiple teams share responsibility. There's no supported way to use DirectX (or Direct 2D or DXGI or ...) from .NET. They know there's relatively large demand for it, but the .NET team says "I'll forward that to the DirectX team" and the DirectX team says "we just do C++ over here." The default response to cross-cutting concerns should be that both teams take responsibility but right now neither team will take responsibility. Another corollary to Conway's Law.