Well, I'm not going to repeat points already made by Brnt regarding Skyrim. I doubt you could find it used for 40 bucks for a week around Christmas.
And the POINT that I'm proving that you seem to keep missing, or at least ignoring, is that you don't HAVE to buy ANYTHING from Microsoft. If they go full digital and jack their prices up to some obnoxious level, you simply don't have to purchase their products. What are you missing here? Having physical discs that you can sell is irrelevant. If the prices are too high, people won't buy. It's not a hard concept. I would argue that is why the prices thus far HAVEN'T been too high on something like Steam, much more so than Steam trying to compete with the used game market.
Got it off steam new for $30 at christmas :smug: