i have witnessed some sort of diversity between what anime we watch in my country ( which was basically more action and serious ones) while in Japan in many interviews most people replied with anime that i would characterize as a more ''otaku'' type of anime with school girls, perverted scenes etc etc (you know what i am talking about)
Also china has done a pretty decent job with some anime they presented at least 3 years now and i can foretell they will get deep into the anime industry
The Japanese market is oversaturated with the same kind of stories. When someone presents something new, and better, market dominance becomes inevitable.