Microsoft had no connection with Ruby or Python either originally.
They hired people to work on IronPython and create IronRuby too.

What annoys me is that Boo is a very innovative language (more so than Python I'd say). It may be that Ruby has more hype at the moment, so it's a good marketing decision to implement it on .NET.

So in a way I'm trying to make sure people at Microsoft know that Boo is loved by a lot of developers. Therefore it deserves the love that Python and Ruby are getting.