Earlier quoted context omitted.
Part of the issue would be that the nooks are translations and the copywriter data would be from the translation date. So modern versions of e.g. the Bible could not be in Standard Ebooks. So easiest to not carry any translations. Bookshops have no problem with this as part of the purchase price will go to the copyright owners of the translation.
Modern versions of e.g. Tolstoy's "War and Peace" could not be in Standard Ebooks. So easiest to not carry any translations?
It's true, modern versions of War and Peace can't be hosted at SE, but those modern versions generally don't reflect revolutionary leaps in archeology :)