Immortal on 09 February 2011
I'm guessing it was the lack of good (well-selling) Nintendo first party games. With the addition of 2D Mario alone, it would've easily topped 30m. Nintendo systems generally seem to sell on almost nothing other than first party games. Plus, its demographic was way different from that of the GBA, so it couldn't borrow from its success.
“These are my principles; if you don’t like them, I have others.” – Groucho Marx
