Amazon’s american media sales increased by the 32% in the year 2011 while the rest of the global media world increased by a more modest 16% . The obvious conclusion is that non-native English Speakers are more willing to consume media in English than native English speakers are willing to consume media in languages other than English. By the end of 2010 more than 2 billion people on the planet spoke English on a daily basis of which a mere 300 million (15%) were native English speakers (mother tongue).
This made English the biggest 2nd language in the world by far which is far more important than the native tongue.
This means that the global market is opening up to the English language and that English publishers and media providers will seek to recuperate their losses on their local markets in other non-English markets. With the advent of global e-commerce this is certainly not difficult and any non-English country that does not translate text books (specifically science text books) into their local language is under pressure. This does not bode well for small languages that requires a critical mass of speakers to survive.