Do you feel the same way about MySQL, Java, or Eclipse, for example? Why is it so bad that a group of developers are motivated to port a commercial product? And why is the reaction "MS should do this" instead of "Thanks MS for helping out".

I just don't get the animosity around Mono and Moonlight. Those guys have balls, and they're doing great work to bring a set of technologies and tools to Linux. Why is this in any way bad? And please leave the IP poisoning arguments at the door--those have been thoroughly addressed and that horse has been beaten to a bloody pulp.