The Amazon "one-click" patent is folklore of the highest order. I've
read that patent, its certainly doesn't claim territory for any time
you can shop with one click. In fact, you can't even patent a result,
you can only patent a process (of which Amazon's one-click shopping is
extensive). Personally, I find Amazon's one-click shopping irritating
and annoying and I've ask to turn it off on my account. More than once
I've accidently ordered something I didn't want. Luckily I noticed it
and was able to cancel the order before it shipped.