Exactly correct (and much better put than I did). I remember, vividly when the "one-click" patent came out, and honestly, it seemed completely ludicrous. All of the people I knew in the valley at the time openly mocked it. It was exactly the sort of thing that any intelligent designer would have come up with, given the presence of cookies (which were at least a bit innovative, but Netscape had provided a royalty-free license to the patent). "One-Click" purchasing is precisely the idiocy that we think of, when we think of Patent abuse.

So, when Apple actually paid money to Amazon, what occurred to me at the time, was that Apple had in a single stroke both added some legitimacy to the Patent, and probably got a discount on the deal because they were the initial customer. It's unclear whether the one-click behavior on IOS made use of any the processes described in the 1-click patent, but, at the very least, it didn't hurt that Apple had it in their back pocket.

All in all I think it was a win-win scenario for both parties.