I wonder if monetization was the only easy way to prevent abuse from the greedy hyper-thieves. Most people who used Z-Library weren't going to buy the books anyway. The library allowed the hungry to learn while giving the greedy some difficulty. I liked their system. I'm not proud to condone stealing but, in my opinion, people were only stealing from the greedy or the teachers at heart, and the teachers at heart would've given away some of their books for free anyway.