My personal theory is that Amazon hates being reliant on UPS and FedEx. I can't see Bezos being thrilled that so much of his empire relies on the Teamsters. Note that UPS's labor agreement with the Teamsters expires in the next few years. That poses a big risk to Amazon's infrastructure if there's labor unrest during the negotiation.
I've long suspected they were working towards a point where they could handle the last mile in house—this development doesn't surprise me at all.
The Amazon USPS Sunday shipping has started too. I ordered something Friday and it showed up at 10am today (Today is Sunday, for those of you reading in the future).
I'm really curious about how FedEx and UPS will handle this. If the legislation changes then I think there could be room for one of these two, or possibly a new competitor, to create their own fleet of drones to offer local deliveries for businesses everywhere.
I've long suspected they were working towards a point where they could handle the last mile in house—this development doesn't surprise me at all.