I imagine that the easiest way to acquire specific training data for a LLM is to download EBooks from amazon. If a university professor pirates a textbook and then uses extracts from various pages in their lecture slides, the cost of the crime would be the cost of a single textbook. In the case of a novel, GRRM should be entitled to the cost of a set of Ice & Fire if they could prove that the original training material was illegaly pirated instead of legally purchased.