Hmm more than 80% of global populations knows english as a developer creator and so on youre basicaly working to make money since most use english majority wins over minority i myself im english self thot and i cant belive you have like translations for evry movie out there in cinemas what do you do around 30% or less knows 2 international languages that is why translators for languages like i duno spanish ,chinese and few more are well paid and sought but as far as i recall platforms like unity ,3dsmax ,cryengine all have some other language packs if you refering to the developer thats a bit selfish is like askin the developer to learn a new language or to hier a translator and as a developer you probably recive income for around 30% if not even less like 15-20% of 100% who play the game the rest are cracked ,hacked and so on Thinkin from more than your perspective gives a clear view of an situation (all depends on circumstances).And as far as i know there are developers out there who translate even if is for a small fee or donation like the ones who translate illusion games