To be honest, I'm having a hard time getting upset over this lawsuit. As best I can tell, IA isn't getting sued over having scanned the books. They're not even getting sued over lending them out. Instead, they're getting sued over lending out more digital copies than the number of physical copies they had purchased.
The books would be no less well preserved if IA had not decided to do this. Access would have gone down, temporarily. The pandemic would have sucked that one little bit more (though honestly, a drop in the bucket for what the people most impacted were already experiencing). And... that's it. It really has no long-term ramifications, aside from whatever legal precedent it sets (if any).
I really like being able to write open source code in my day job, and I appreciate information freedom. But I don't think those principles apply here. I really do think this is just a straightforward case of an organization overstepping their bounds and getting slapped down for it.