I agree with the importance of black Friday however there may simply not be enough copies of the game available by then to release it. Most people agree at this point that it was a production issue that caused the delay.
That didn't stop Nintendo selling the Wii, or Microsoft selling Kinect and then claiming a massive problem meeting "unprecedented demand" BS... When anyone with any sense knew it was an intentional drip-feed supply stunt.
Get 500,000 in each region, and then consumers fight for them.