I will update my language that mimicked the original comment. However it is not simple discussion. Here is a snippet related to Japan’s law, updated from ca 2018 with AI systems in mind, and clarified recently. I personally find it totally reasonable and support it.

“The use of copyrighted products or materials to train generative AI models would be prima facie copyright infringement under the Copyright Act, as it is a reproduction (fukusei) or other form of use of the copyrighted work. However, Article 30-4 of the Copyright Act stipulates that the use of copyrighted works by generative AI for learning purposes is allowed in principle.”