Interesting work here, using Internet Archive's APIs for automated ingest of scholarly OA monographs:
"Experimenting with repository workflows for archiving: Automated ingest / Options for computer-assisted repository archiving for small and scholar-led presses publishing open access monographs" by Ross Higman
https://copim.pubpub.org/pub/d9ty1sr3/release/1
Higman notes that Internet Archive could be "a useful alternative for small and scholar-led presses who do not have close institutional connections."