Originally Posted by Asbjoern
You are being sarcastic, right?
The "Games for Windows" program is in my opinion an attempt from Micrsoft's side to gain control of the PC gaming market and integrating their Xbox platform with PC gaming so that they strengthen their market position towards the other console developers. That is in my mind not fair competition.
The "Games for Windows" program also serves marketing purposes for Microsoft. To gain the benefits of the program you need to have Vista so it is clearly a strategical maneuvre to boost Vista sales.
And not one single of the features you listed is anything ground-breaking in any way. They just don't suffice to warrant having the program.