It seems like it would be well within the charter of the Library of Congress to archive a complete scan of every book published in the United States. At least then we wouldn't lose the information. They can figure out distribution and copyright later.
The US Library of Congress is already a book depository, i.e., it has a copy of every book published in the United States. Same for the British Library for the UK and Ireland. Similar depositories exist for most other countries who care for their culture.
Which is really why the outrage cycle over Anthropic's actions is largely misplaced.