AI has been trained on pirated material and that would be very different from someone buying books and reading them and learning from them. Right now it's still up to the courts what counts as infringing but at this point even Disney is accusing AI of violating their copyrights https://www.nytimes.com/2025/06/11/business/media/disney-uni...
AI outputs copyrighted material: https://www.nytimes.com/interactive/2024/01/25/business/ai-i... and they can even be ranked by the extent to which they do it: https://aibusiness.com/responsible-ai/openai-s-gpt-4-is-the-...
AI is getting better at data laundering and hiding evidence of infringement, but ultimately it's collecting and regurgitating copyrighted content.