Are there any numbers on how the availability of books in this way negatively impacts sales? Bear in mind that often people resort to such libraries because the

Are there any numbers on how the availability of books in this way negatively impacts sales? Bear in mind that often people resort to such libraries because they are unable to buy a copy (out of print, not available in their country), can’t afford to buy (so they wouldn’t be paying anyway) or just want to look something up (wouldn’t bother buying the book just for that).