UK vs Microsoft

So who owns the rights to Windows? Last I heard, Microsoft did. How can the EU, or any government, tell Microsoft what it can or can't do with its own product? I can choose who my customers are, who to serve and who not to serve, and what services I offer. Can the government tell me that I offer too much, or cater to myself; do I do things so well that my competition is left behind? No. If Real Networks and the others want source code, they can create their own operating systems. The consumer can choose to use any media player supported by Windows, as I do. I have iTunes, RealOne player, and Windows Media player currently. I use all three nearly every day. When the government tells businesses what to do, it all goes downhill from there. I bet they're gonna make me serve everyone. I won't be able to turn down a contract or call, because they made Microsoft change their own product to aid their competition. All the competition has to do is make a better product. That's what a free market is all about.