Since Nintendo fans are blinded and don't want to see things from someone who is stating such things realistically, how about a quote from Iwata? When an investor asked Iwata how come there was only third party titles, here was part of Iwata's response.
"The other reason, he revealed, was that the company wishes to address the concern that only first-party games sell well on Nintendo systems. While the Nintendo DS shows no traces of this problem now, early on, it too caused similar concerns, which were quickly dispelled. The Wii, however, still faces the same stigma, and Iwata says that with the 3DS, Nintendo wish to create a healthy third-party environment right from the system’s launch. For this reason, they’re holding back their own software for the moment so that third-parties can enjoy the attention of the market."
Iwata is basically saying that Nintendo fans mainly buy first party and without giving third party publishers a chance to sell their product, they'll eventually lose support. Which as you can see three years later, he was right.
http://www.siliconera.com/2011/02/02/why-only-one-nintendo-title-at-3ds-launch/
