Blockbusterization of literature, or some more thoughts about SEELANGS email

Bernard Kreise, one of the greatest, if not the greatest French translator of Russian literature, told me that about 80% of all books being published in France, are translations of English-speaking, mainly American authors. Which means that all literature by local French authors and all translations from all other languages represent these residual, laughable 20%.
What I found even more difficult to process, is a piece of statistics I found a couple of years ago on a site of some American publishing house. It said that from all titles published during that year in the US, — which was an impressive amount of 180.000+ titles, — only about 800 were foreign adult literature in translation.