The DS is not an upgrade... until the Palm software comes out for it. When that happens, it all makes sense as to exactly what Nintendo was trying to do -- corner a market that has always had high-end stuff with low power. My Pocket PC cost $600.00 not too long ago and drains its battery when playing NES games in about forty minutes. Had the DS been released with the Palm OS on it like Nintendo originally said, it would've KICKED Dell's ass. Not just would it be more useful as a Pocket PC, but it would've been so much more powerful and cheaper.
Oh yes, but the PSP is supposed to be Nintendo's main competitor on that front. You know, as much as it is sort of (since the DS is also another game system, after all), it isn't if Nintendo ever brings out the Palm OS.
On top of that, Nintendo has tons of money in the bank. If they started losing money on any of their endeavors, they would drop them like a bad habit -- didn't _exactly_ that happen with the Virtual Boy? Nintendo didn't stick around with it trying to prove it was incredible. They cut their losses. If Nintendo was in such serious jeopardy because the DS was doing so badly for them, they would drop it. As it stands, it has sold millions of consoles, has made Nintendo tons of money and has a lot of interesting software coming out for it soon. Hardly a failure.
So yes, I fed the troll and I'm sorry... but I am really sick of listening to uninformed people take shots at the DS because of some perceived PSP "success." The PSP is successful (although not as successful as Sony expected it to be) but it hasn't wiped the DS off the face of the planet. And it won't, unless Nintendo decides it isn't worth it to them to keep it on the market.