Microsoft has sold 67 million Xbox 360 consoles since its launch in 2005, raking in more than $56 billion at retail. Kinect has sold 19 million units and Xbox Live has 40 million members, leaving us to question what the remaining 27 million people are doing with their Xboxes if they aren't downloading games or watching video on Amazon Instant, a service announced and rolled out just today. It would appear the current generation of gaming consoles has sustained itself on its broader entertainment options, and Xbox 360 sales have increased from years four to five, five to six and six to seven, as the graph below indicates. "The more entertainment options we add, the more time people spend on Xbox," Microsoft said.
Source: Xbox 360 has generated more than $56 billion in retail | Joystiq
Wow and that's just in retail. Imagine the total with MSP, xbox live subscriptions, games on demand, etc and retail..