My understanding is that the IA had implemented a digital library, where they had (whether paid or not) some number of licenses for a selection of books. This implementation had DRM of some variety that meant you could only read the book while it was checked out. In theory, this means if the IA has 10 licenses of a book, only 10 people have a usable copy they borrowed from the IA at a time.
And then the IA disabled the DRM system, somehow, and started limitlessly lending the books they had copies of to anyone that asked.
I definitely don't like the obnoxious copyright system in the USA, but what the IA did seems obviously wrongagainst the agreement they entered into. Like if your local library got a copy of Book X and then when someone wanted to borrow it they just copied it right there and let you keep the copy.
ETA: updated my wording. I don't believe what the IA did was morally wrong, per se, but rather against the agreement I presume they entered into with the owners of the books they lent.
Which was nice of them, but that doesn’t mean they should’ve done that, especially in the eyes of the law.
(Also, if you’re after free ebooks, why are you pirating them on archive.org instead of libgen?)
I definitely don’t like the obnoxious copyright system in the USA, but what the IA did seems obviously wrong.
The publisher-plaintiffs did not prove the "obvious wrong" in this case, however US-based courts have a curious standard when it comes to the application of Fair Use doctrine. This case ultimately rested on the fourth, most significantly-weighted Fair Use standard in US-based courts: whether IA's digital lending harmed publisher sales during the 3-month period of unlimited digital lending.
Unfortunately, when it comes to this standard, the publisher-plaintiffs are not required to prove harm, rather only assert that harm has occurred. If they were required to prove harm they'd have to reveal sales figures for the 27 works under consideration--publishers will do anything to conceal this information and US-based courts defer to them. Therefore, IA was required to prove a negative claim--that digital lending did not hurt sales--without access to the empirical data (which in other legal contexts is shared during the discovery phase) required to prove this claim. IA offered the next best argument (see pp. 44-62 of the case document to check for yourself), but the data was deemed insufficient by the court.
In other words, on the most important test of Fair Use doctrine, which this entire case ultimately pivoted upon, IA was expected to defend itself with one arm tied behind its back. That's not 'fair' and the publishers did not prove 'obvious' harm, but the US-based courts are increasingly uninterested in these things.
To be fair, this is what I meant when I said wrong. Enough people have taken umbrage with my wording that I think I should update it, though. Thank you for your reply.