Trying out AmazonHD via VPN myself .... this will force Spotify and Google's and Apple's hand. In some ways the best thing that could happen to the democratization of better and high resolution digital.Something I can actually partially agree with you on.
However it will require Amazon to open up their cheeks a little and let some of the smaller devs like mConnect and other aftermarket programmers get a hold of their apk so Amazon can be incorporated into more systems.
You know, like Tidal and Qobuz are embedded in nearly every streaming hardware device out there.
Do that and yes Amazon have a chance of taking over the hires streaming world for sure.