This is not a honest comparison. Books are mass produced and don’t rely solely on their authors paying hosting bills and willingness to not change stuff to keep existing.
Relying entirely on a single nonprofit (archive.org) to provide a honest snapshot of every cited link, at the time of citation, sounds much more unreasonable.
Relying entirely on a single nonprofit (archive.org) to provide a honest snapshot of every cited link, at the time of citation, sounds much more unreasonable.