Nintendo makes inexpensive reliable hardware that is sold based off of unconventional technology and creative ideas, Apple produces expensive unreliable hardware that is sold based on style rather than substance ... While there are some similarities with how these companies react within their markets, they really aren't all that alike.
What Nintendo needs to do is:
1) Set up a subsidiary in China that can develop libraries of graphical game assets based on their most popular IPs. Effectively, they should take all of their games that were released on the N64, Gamecube, Nintendo DS, and Wii and separate them by art style and take all of their assets and rework (or re-create) them to be well suited to 3DS or Wii U games. This should allow them to create similar games in these series in far less time because a large portion of the graphical assets will have been created ahead of time. There would be an added benefit as many of these games would require little additional work to be re-released as enhanced remakes.
2) Buy many independent developers, or struggling developers that are at risk of being shut down by their publisher, to ramp up their ability to create a large library in house; they should take particular notice of genres they haven't typically been strong in to ensure that they can provide a wide range of gameplay experiences regardless of how third party publishers treat their system.
3) Increase marketing budget to promote each platform. Use this money to create 60 second TV spots where you advertise the platform (~15 seconds) and 3 games, 1 of these games will be a Nintendo published game and 2 will be published by third party publishers. Use this "free" marketing as an incentive for further third party development.
4) "Lend" more first party IPs to third party publishers in exchange for greater third party support (in a similar fashion to what was done with the Gamecube and GBA).
