Kirby Air Riders is yet another proof that Sony's problem in Japan is IP and software related, this is a pretty niche Nintendo game that has an incredible launch week in Japan, comfortably outselling AAA Sony titles instantly, on a still fairly small user base as well. That in itself shows the taste of the Japanese gaming market, its just much more in line with what Nintendo is offering there.
Just as Sony benefits from offering AAA games in Spain due to the taste of the European market, Nintendo is slated to continue to dominate Japan all because of software related reasons.
As i stated, you can't dominate everywhere, in a global market, countries in different regions will have very different taste in general when it comes to games.







