What's surprising here is that Japan is usually crazy gung ho on copyright enforcement ... at least against individuals.

So it's kind of disgusting to see this relaxation, when it suits some corporate or national interests.

https://en.wikipedia.org/wiki/File_sharing_in_Japan

"Unlike most other countries, filesharing copyrighted content is not just a civil offense, but a criminal one, with penalties of up to ten years for uploading and penalties of up to two years for downloading."

"There is also a high level of Internet service provider cooperation."