> Please enlighten me on the ideas! concepts! Microsoft held back again and again that were not available on free software systems?

Are you joking? I'll just give you one example: IE 6 and its complete disregard for open standards, end-user security and its lack of change put the web in stasis for years. At first, it didn't make much difference that we had Firefox because developers still made their pages only compatible with Microsoft's non-compliant browser, which was understandable as most people used it. Since IE lost ground the web has become a much more open and welcoming space for experimentation and advancement of its technologies. And that's undeniable.