What were they going to do, shrug and say "yeah, we're greedy"? Just like EA and it's loaded reviews on Meta-critic, MS (or nearly any company for that matter) will always attempt to rationalize their actions, however bad. I, for one, prefer a physical copy of the games I own (god forbid I say something a company doesn't like, they get wind of it, and lock me out of being able to play it or even removing paid for game from my account), if I save money while getting what I prefer, who am I to ***** about it?
More power to ya, Microsoft.