To be honest though the second apple inevitable bring 3d to their device the marketing appeal of it will die out. Where as having something like the power of the psp2 will take alot longer to develop.
This coin has two sides. Pricey games, longer dev cycles, bigger budgets.
And once again it's too early to dismiss the biggest contributor to DS success- Nintendo games - as it turns out, they're harder to emulate, be it Apple or Sony.