I came across this on the web this morning: 

Over 500,000 books may disappear from the Internet thanks to a recent appeals court ruling. The court ruled that the Internet Archive, which scanned the books to make them available for digital lending on-line, violated the copyright of various publishers. Those publishers brought the case.
I don’t want to get into an argument about copyright violations. The reality of the situation is that many of the books ONLY exist in digital form now. Deleting them will mean losing them, perhaps forever. This will be a ‘great erasure’ of books and knowledge–the sort of loss that the Internet was supposed to help prevent.

Link to ruling: https://www.publishersweekly.com/pw/by-topic/industry-news/publisher-news/article/95865-appeals-court-upholds-decision-against-internet-archive-s-book-scanning-program.html