You made me think again. Thanks. There are a few ways Amazon can go with this: 1. They have a non-legal but persuasive claim that the unit was subsidized and

You made me think again. Thanks. There are a few ways Amazon can go with this: 1. They have a non-legal but persuasive claim that the unit was subsidized and the sale of the unit might include shrink wrap rules against tampering against the advertising module (and a wide claim on all other modules/business models). 2. Even when the open source community will eventually work out how to circumvent it, Amazon might hope that people would rather not void their warranty etc. 3. #1 is not entirely settled and is still in litigation (see http://www.variety.com/article/VR1118005513?refCatId=14 http://www.variety.com/article/VR1118005513?refCatId=14)