I agree, that's why we extensively use FLOSS. It is nice being use the same innovations that power Google (Guice), Yahoo (Hadoop), Facebook (Thrift).

I have a friend who does a lot of C# and he claims there are some really interesting things going on over there. F#, automatic parallelization in the CLR, FP goodness in C#.

Meh, I'd rather deploy and use open tools and platforms.