twesterm on 14 March 2010
I don't think it will.
If for some odd reason Halo went multiplatform (it never will, just using it as an example) it would piss a lot of people off, but it's still Halo and the Halo fans are still going to buy it.
The people who have the other system but no Xbox now also have access to the game so that opens it up to more people. There will be those stubborn other system users that will never buy it but FPS fans will, so still more sells.
