People can buy both. Don't think that the PS3 can't convert 360 owners into PS3 owners and vice versa. But just remember if someone owns a PS3 they had the choice to own either console and went with a PS3 over the 360. While you can't say the same thing for 360 owners because maybe they couldn't afford a PS3 or the PS3 wasn't out yet, but the longing for one was still there.