So you can either play a Kinect game or do this ? I dont see you can do both esp. considering Kinect expressely asks you to move aside the coffee table.
Amazon is actually not selling all its items below cost, only popular ones. A very common strategy in retail. This allows you to sell not so popular items at enough profits to cover the difference and also at the same time making you the destination for ALL items.
Also, just like Rommel102 mentioned above it invests back in it’s buisness which is super important for long term stability and growth.