What "deep discounts"? Signing on to the most expensive network? They agree to a price per phone. If they want to take more of a loss, and say you can pick up a 5S as a "free" phone, that's called cutting off your nose to spite your face.
So you are saying if Verizon gives Apple $12B and not even get a paper clip for it, this would keep Verizon's nose intact?