I would be surprised. Amazon has a history of developing tech for its own purposes, and then selling the tech. Their SOA architecture is now the backbone for one of the largest cloud services platform on the internet.

They might be the go to supplier for commercial drones in the not to distant future, so when they work with the FAA to get them approved (which i'm sure they're doing), i'd bet they are keeping alternative applications very closely in mind.

Remember the "at Amazon, everything is a platform" Google+ post?

Drones as a Service.

Oh, yeah. I could easily see them renting time on unused drones.

Rules for fully autonomous commercial flight might not (and should not) changed the rules for hobbyist, noncommercial flight.

Manually but remotely piloted aircraft (RC planes) are still a huge hobby and the FAA does not currently care how automated the flight is, only that it is noncommercial and that you can see the aircraft from the controls. It's doubtful that the FAA would amend these rules rather than create a separate category for unattended commercial flight.