That's my point- the mentality IS changing- at least in the realm of development tools. Listening to speakers from the visual studio dev team is night and day different than it used to be. They are very interested in providing tools that support development on more than just windows and IE- I'm pretty sure they would love to see Silverlight fully supported on every platform- not just windows.

They are getting behind jquery in a big way (for their non Silverlight web solutions, obviously), which already demonstrates a shift in the way they are thinking.

MS has a lot to overcome in this regard, both in their internal culture and external perception. I don't know if they'll be able to do it, but the dramatic shift in their attitude toward dev tools (at least, that's how I perceive it) is a good sign.