I see now from up thread, this is 2.6 million individual titles, not actual book sales. To me, this still seems low. Unfortunately, the bookstat website linked

I see now from up thread, this is 2.6 million individual titles, not actual book sales. To me, this still seems low. Unfortunately, the bookstat website linked in the article won't load for me, but I wonder if that is only the total number of English language titles (sold online).