Thank you. 3 of them already do. Apple does it in music. MSFT does is in OS. And, Google does it in targeted ad search.
Yes, but really now. When Microsoft does it, do their products really end up with the same quality as the other two?
Just imagine whether a great social photo sharing service like flickr would ever exist under Microsoft's corporate culture. I mean, look at the hotmail trainwreck: tell me with a straight face that it's as good a service as gmail or Yahoo! mail.
Can you ever imagine Microsoft creating iTunes out of a product like SoundJam? If MS had bought SoundJam instead, just imagine what it would look like. They just don't get simplicity, and elegance, and the other two do.
Not to mention, I don't recall either of Apple or Google actually cutting deals with companies saying that they could only use their product if they *didn't* use their competitors. Apple would not say to Wal-Mart: "You can sell our iPods in your store, but not if you sell digital music downloads online". Well, that's exactly the kind of tactics MS used against Netscape in the 90s (to Compaq: "You cannot have a Windows license for your computers if you bundle Netscape"), and it's much more impactful, since Compaq could literally not have sold the computers without Windows on them, not to mention slimier than either Apple or Google would have behaved under the circumstances, IMO.
I think you can argue that any company would take great steps to protect their position, but to claim that Microsoft, Apple and Google are equivalent is just burying your head in the sand in a different way. They're all good in some ways, and evil in others, but not necessarily in the same ways.