As soon as you ask somebody to pay for something you lose control over every aspect of it. If that is not your intention you should rent your devices to people.
What really amazes me is that the law enforcement people are so eager to comply with this stuff that they even set up a special hotline for it.
As far as I'm concerned these kids are doing honest work, they're breaking a chain of control that should not even be there.
That's more or less what these companies are doing. If you read the mouseprint, you're effectively buying a licence to use their device on their terms. :P
If there is a bill of sale I'm buying it.
If there is a rental agreement and I have to return it at the end of the agreement then I'm renting it.
More or less doesn't cut it.
He could also potentially counter-sue with a class-action lawsuit claiming that the video game systems makers committed fraud by way of falsely advertising to people that they were "buying" the game systems, when in fact, they were actually leasing them.