Nope, Microsoft originaly wanted to screw with the PS3, their main competition by paying Bethesda a bunch of money for the exclusivity, but even though Skyrim on the PS3 is buggy as hell and doesn't even have any DLC's out yet, they already paid the money, so they might aswell screw with the PC players and make them want to buy the DLC on xbox, where they get a cut, instead of windows.