When you steal from the library, you are preventing anyone else from reading that book, and the very notion makes me want to drop you in the Void.
As for collaboration - I have done a lot, 26 books, and found publishers increasingly resistive to them. It's not that the books are bad; editors won't even read them.
I maintain an ongoing survey of Internet Publishing and self publishing, so that it is now possible for any writer with a book to get it published at nominal cost or free, and to have it on sale at booksellers like Amazon.com.
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