I'm not sure I understand this. It is OpenAI that is scraping the copyrighted works, packaging them up into a derivative work and selling access to it.
If a user never enters a prompt asking ChatGPT to create a new ASOIAF book, pieces of those previous copyrighted books are still in OpenAI's model and available for sale by OpenAI.
Chat-GPT the LLM itself is the derivative work that OpenAI is selling access to.