I have the Sonos Amp and its a little frustrating that having amazon prime and also have paid for the Sonos amp I cant play the music. Is there a cut that Sonos is waiting to get from Amazon before they let folks use their two paid products?

There are additional development tasks, as well as testing, on the Sonos technical estate that needs to be undertaken for the Sonos One to work within a specific country, hence the staggered rollout across different countries.

Sonos have never, as you would expect, defined the level of effort involved for a specific country but there does appear to be a steady deployment across additional countries.