Don't know about groups, but artists are pushing back. Female mangaka pushed back at the UN wanting to censor manga, and the author of Love Hina did some push back recently.

Companies are being purchased by China, or becoming more globally oriented (Sony), which is driving them to less focused on what Japan wants. There still are aim their products primarily at a Japanese audience, but globalization is still taking effect in the country.

Not sure what I want more, Japan closing off even more from the international market, or becoming much better at selling direct, without westerners getting involved.