The first sale doctrine that libraries rely on doesn't exist for digital media, so how would you propose build a "morally acceptable" digital library?

* You can't do it by just buying ebooks because those don't come with distribution rights. This is essentially what zlib does, albeit with ebooks "donated" by others.

* You can't do it with interlibrary loan for the same reason.

* You can't do it by buying a distribution license because some of the largest publishers simply don't sell those.

* You can't do it by purchasing physical books and scanning them into digital equivalents ala controlled digital lending. Internet archive tried that.

The current situation today requires either paying perpetual, recurring licensing fees on every single ebook or piracy. If all we have is the former, libraries will never be able to stock anything beyond a small collection of topical books, as is already the case at most local libraries.

There's nothing wrong or bad about copying digital information.

paywalling art & culture is wrong, imagine paying a license fee on the use of the italian pizza culture, on the catholic bible, on songs and works of arts like images of paintings bcs people could/should go to the museum and pay to see the paintins. Obviously commercial uses of third parties intellectual propriety should be regulated and enforced.