Millenium on 30 November 2011
Unlikely that MS lost any money at all, with production cost constantly going down, the Xbox 360 & Kinect are not very expensive to manufacture at all.
And is always the case with every system, it's the software where you get your real profits, and considering MS is doing very well in that department this year, as well as Xbox Live still growing, so they made most likely made money this Black Friday, maybe even more than Nintendo & Sony in the gaming department.
We'll know once we get revenue figures again.
