Is there any evidence suggesting that libraries are killing bookstores? If so, is this something we should be concerned about, or do the public benefits of libr

Is there any evidence suggesting that libraries are killing bookstores? If so, is this something we should be concerned about, or do the public benefits of libraries outweigh the reduced opportunities for booksellers? Considering this was apparently the closing keynote at an academic library conference (CALM), is there any reason to believe that school libraries are a bad idea?