Wow what a thread. I cant believe how much people believe that the $400M was made up massively of microtransactions and controllers. Seriously I can see microtransactions adding $ in the long term, but not the first week. There are 4 of us playing in Halo 5 in my family and we have spent exactly $0.00 on microtransactions.
As for digital download I expect that this is the highest percentage game ever for digital download. MS has had advertisements up on the Xbox One for months about pre-ordering the digital version from your couch. We certainly did that and I don't know anyone who didn't purchase digitally. To have it available at midnight launch without a trip to a store. Certainly a huge amount of day 1 sales were digital.
Its libraries that sell systems not a single game.