It wasn't that long ago (1,5 years) when I travelled to Rome, I saw posters in the central station, saying "It is important to you that you learn english". Yes, it was a company selling language courses for business english, but in Germany it would be rather like "Need to _improve_ your English? We can help!". They would never imply, you are not able to speak english. That much about every European should be able to play in English. In addition to this, I would advise to all anglophiles to use basic services like taxi driving in Montreal and try out, if english is really enough to get along. My personal experience says no. But maybe I only had three bad days in sequence.
The only "must" in the world is having to die. The rest is bonus, pure will or strongly connected to if-else arguments.
Quite a lot of asian people would start laughing now. If they could read English, of course.
There are more people speaking French, German or Spanish than are living in the countries you've quoted. For example you missed out, that the whole southern american continent speaks spanish (except of Brazil, there it's portugese), including Mexiko and quite a lot of people living in the USA. Wikipedia also says, there are more people speaking spanish as their native language than english. That much about figures. Of course you can exclude several markets and target audiences, it's simply a business decision, as it is always. But in that case they would also disappoint quite a lot of people. If I recall correctly, their games have always been well received in Europe, sometimes even better than in the USA. So I think it's correct, that there is a large group of fans who would like to play the game in their native language. Gaming is about entertainment, having fun after daily work, when your children have gone to bed. And there are a lot of people that don't think doing vocabulary excercises belongs to that.
For me, I would be really disappointed if they would not offer a tranlsation to the EFIGS. I do understand english well enough to play a game, but I think Obsidian has the capabilites to do this and that's what makes the difference between a good and an extraordinary dev. If Fargo can do so, Obsidian should be able to do so as well. I don't think it's rocket science to translate a fantasy text and it worked quite well with planescape and all the other games Black Isle or Obsidian released.