It funny, I have FPV stuff and know a lot of guys very heavily into this and they all thought Amazon's announcement on "60 Minutes" was a joke.

A recent FAA OIG report said there is a chance that the FAA will NEVER fulfill the mandate to incorporate UAS in the national airspace. Having worked on one of the key systems needed for the_really_big UAS to operate, I agree with the OIG.

"As a result, while it is certain that FAA will accommodate UAS operations at limited locations, it is uncertain when and if full
integration of UAS into the NAS will occur."

http://www.oig.dot.gov/library-item/6605

EDIT. IMHO, The only systems I think the FAA will ever allow are line of site, like photography. It is stunning to think that Amazon really thinks this is going to work.