He CLEARLY states that an ipad is not the same as a kidney. THEN he goes on to explain that if you produced/bought your own ipad then you own it. Just like you have fed and clothed yourself, and taken care of your kidney. So you own your kidney, and you own your ipad. In this example THERE IS NO DIFFERENCE.
Can you think of ANY scenario where another man has a Right to your kidney?
Can you think of ANY scenario where another man has a Right to your ipad?
This is where the similarities arise.