Saying that Nintendo has abandoned their core audience is, of course, an exaggeration. Saying that they are no longer their primary focus, though, is just reality. The fastest selling console with the largest userbase has a first-party holiday release lineup that consists of 2 titles. Wii Music and Animal Crossing. That speaks volumes.
As for this being the third parties' fault. That's not how this works. It is the platform holder's responsibility to create a market that can allow 3rd parties to sell their games. If there were an opportunity for 3rd parties to develop quality software for the Wii and make money doing it then they would. Look at what Microsoft has done in Japan. Microsoft made sure that several JRPGs appeared on their system. They didn't do spectacular numbers. They didn't radically change the fortunes of the system in that territory. What they did do was attract fans of the genre to buy the system. Would you now see (minus MS's support) a Square-Enix independently decide to make an RPG for 360 on their own initiative? Probably not. But how about a smaller developer like Atlus? There's a reasonable expectation that a modestly-budgeted (not to be confused with poor quality) JRPG could make money on the 360 even without MS's direct support.
If MS hadn't worked to create this market would you then say it was the third parties' fault that there were no JRPGs on the 360?
As for this being the third parties' fault. That's not how this works. It is the platform holder's responsibility to create a market that can allow 3rd parties to sell their games. If there were an opportunity for 3rd parties to develop quality software for the Wii and make money doing it then they would. Look at what Microsoft has done in Japan. Microsoft made sure that several JRPGs appeared on their system. They didn't do spectacular numbers. They didn't radically change the fortunes of the system in that territory. What they did do was attract fans of the genre to buy the system. Would you now see (minus MS's support) a Square-Enix independently decide to make an RPG for 360 on their own initiative? Probably not. But how about a smaller developer like Atlus? There's a reasonable expectation that a modestly-budgeted (not to be confused with poor quality) JRPG could make money on the 360 even without MS's direct support.
If MS hadn't worked to create this market would you then say it was the third parties' fault that there were no JRPGs on the 360?