The revenue breakdown must go somewhat similar to the following
Per unit kinect
Better material attach rate for the 45 million Xbox installed base $150 Higher adoption and market share gain for the console itself Assuming 20% of those buying Kinect are new owners $300 * 0.2 = 60 An uptick from the sale of new titles = $40 * 5 ($40 average game price and 5 games per kinect) = 200 Lower attrition and higher gross new subscriber growth for Xbox Live users let say kinect keeps half its install base on Live for one year longer, which is $60 per year afaik so that's $30. So each kinect nets a total of $440 revenue. $2 billion / $440 = 4.55 million unit sales. Well, unless my maths is wrong anywhere, then I think the only conlusion I can draw is that these people are talking about this year only, they started with the 5 million sales figure and worked out how much people would be spending on each one to get 2 billion
