Originally Posted by LordCrash
Spanish is a standard language in any modern AAA title


Exactly. In any modern AAA title. But D:OS certainly isn't AAA. More classical RPG games, are completely different thing than AAA productions. There are countries like Poland, where AAA titles doesn't sell well, but classic RPG fanbase is very strong, so most of niche productions got tranlations. And on the other hand, there are countries with good sale numbers of AAA titles, and at the same time very, very low demand for games like D:OS.
Maybe Spain is one of these?