And weights

Isn’t it the mission of non-profit “Open”AI and Anthropic “Public Benefit Corporation”, right ?

That is an elision for "public knowledge". Of course there are nuances. In the case of books, there is little doubt: printed for sale is literally named "published".

(The "for sale" side does not limit the purpose to sales only, before somebody wants to attack that.)

Books are private objects sold to buyers. By definition, its not public knowledge.

Again and again: the "book", the item, is a private object, access to the text is freely available - to those member of societies that have decided that knowledge be freely available and have thus established libraries. (They have collected the books - their own - so that we can freely access the texts.)