Its strange that Amazon did this, because its clearly not because of licencing (you didn't restrict it). Although this does happen quite frequently for me, mostly when clicking links on reddit (streamable for the win)
I ranted about this in the unofficial Alexa Slack team and the people there gave some plausible (but unsatisfying) reasons why it works like that. I'm not a huge fan of Amazon though, so I'm happy to blame them. Essentially it boils down to different regions being treated as different "languages" as well as having features rolled out to them at different rates.
