Can't really agree, literature is literature because of form not content, every literary work is its own separate world with references to other similarly separate worlds from the past. Data analysis can help finding invariants, like in Meter in Poetry from Prof Nigel Fabb https://www.amazon.co.uk/Meter-Poetry-Theory-Nigel-Fabb/dp/0... , but not the reason why literature is literary at all, which comes from social sciences. Mythopoesis as the cumulative sum of the real and imaginary worlds thought by humans is another possible result but it would not be literature, languages and theory of language instead.

For that, they should consider the underlying universal metrics (or meters) instead of the local languages, along the path derived by Prof Nigel Fabb in the UK https://www.amazon.co.uk/Meter-Poetry-Theory-Nigel-Fabb/dp/0... of which you have a review here https://web.stanford.edu/~kiparsky/Papers/fabb_halle_review....