Mendicate Bias on 08 August 2009
I think MS's thought process on this is that enough people know about the games and its a strong enough brand that people will buy the games just off recognition even without a demo so why waste the resources. Besides if a demo isn't done very well it can put off a lot of people from purchasing the game even if the demo isn't representative of the quality of the full game.
The definitive evidence that video games turn people into mass murderers
