I wonder why you want to keep animation and gaming to japan when Chinese companies are producing super Donghua and Games. Japanese game and Anime industry also outsource lot of animation work to China as well. Its time take away Japanese market share for these two industries as well just as they lost JDrama and JPop.
Japan can only survive by completely transforming into a subordinate of China speaking Chinese. Otherwize it is doomed degrade and slowly become poorer and poorer.
Realistically speaking Japan has produced many iconic IP such as Super Mario Bros, Pokemon, Gundam, Sailor Moon, Godzilla, Street Fighters, Sonic the Hedgehog, Doraemon and such which I believe some at least would remain known for generations like Alice in Wonderland and Journey to the West.
The beauty of such soft power is the characters never grow old like those Kpop idols, cannot be replaced by other cultures like cheongsam with kimono nor become obsolete like smartphones, they became legacy and cultural identity of such nation.
When I mean few industries left for Japan, it's basically cultural stuffs, no more high tech robots, no more fancy gadgets, no more sophisticated chips, no more advanced military weapons, all those has become a thing of the past.
Oh about hentai and such, they can keep that no problem
