While a good step, this only makes up for a portion of what the settlement would have allowed. (Most obviously, it appears this only covers books from a 20 year period and it takes more work to ascertain that the books are not being sold.)
Moreover, this does not contradict the idea that the Authors Guild settlement could have complemented public domain efforts. Even today some of the books saved on the Internet Archive were retrieved via Google Books: https://archive.org/details/googlebooks&tab=about
Moreover, this does not contradict the idea that the Authors Guild settlement could have complemented public domain efforts. Even today some of the books saved on the Internet Archive were retrieved via Google Books: https://archive.org/details/googlebooks&tab=about