It's not a matter of talent. It's a matter of language. Shakespeare and Twain couldn't write their books in latin because their writings are tied with the language itself not to mention the culture with the language helped to define.
So they might have written great latin literature, but we'd still lose out on great english language literature.
It's stilly to say we should get rid of spanish, german, russian, etc literature since we'd still have great english literature. Nobody in their right mind would say that. Just because if everyone spoke latin and we'd have great latin literature doesn't mean that we don't lose anything. We'd lose english literature.
On the other hand, when I am reading a book in Classical Greek with accompanying translation to English, I more often than I would like to catch myself reading the translation - not because I do not understand the Greek text but because the translation is so delicious!
So they might have written great latin literature, but we'd still lose out on great english language literature.
It's stilly to say we should get rid of spanish, german, russian, etc literature since we'd still have great english literature. Nobody in their right mind would say that. Just because if everyone spoke latin and we'd have great latin literature doesn't mean that we don't lose anything. We'd lose english literature.