Google TV isn't exactly the most popular Google device. Granted, Apple is having the same problems with its own Apple TV. Whatever the problem, Google is not giving up, it is now announcing that Google Play music and movies is becoming available on Google TV devices in more places on November 13, the day the Nexus 4 and the Nexus 10 go on sale.
Google's music and movie stores has been available in the US for a long time and Google is only now starting to make them available in more places.
The Nexus 7 tablet was a pioneer in this and the reason why the Nexus 7 is available in so few countries is precisely because the Google Play music and movie store is available in so few countries.
What's interesting is that Google jumped the gun a bit and initially said that Australia and Canada would be getting the same, but this is not true. However, you can expect those two countries to be included soon.