Yo Ian, as someone pointed out in another thread, there are games that REQUIRE memory cards for the PS2, but I don't see third parties b!tching about that. There are multiple light gun games on the market that REQUIRE a light gun. People buy additional controllers just because it's a different color, for crying out loud. Honestly, if the standard controller is up to par w/ the PS2 and XBox controllers (that is, not yet another "innovation" with buttons all mapped on the bottom and a breathalizer used to move), I wouldn't mind shelling out $25-30 more for the controller... and I'm sure most serious gamers would concur.
The thing is, the market has changed. People are spending $400 for cellphones! Little kids in elementary school carry cellphones with them, have their own laptops, and own iPods. I'm not sure what market Nintendo is trying to win over... those afraid of technology, or those hoping to embrace it. The ones afraid of technology are the OLD people... and I don't see ANY reason of trying to get them. I wouldn't mind the new controller paradigm if Nintendo said they wanted to advance technology more than trying to bring in the uninitiated.
Nintendo has been innovators (so far as the gaming industry is concerned). The first with the analog stick (N64, sans Atari), the first with rumbling(N64), the first to use solar light (GBA, Boktai), the first to use a touchpad as an innovative gaming control (DS, sans PDAs), first to use a mic (Famicom, though it was dropped for the NES) and the first to use a camera (Game Boy Camera, anyone?). Let's not forget the first 1st Multitap (NES, Four Score), pad peripheral (NES, Power Pad) and Light Gun (NES, Zapper). If I recall correctly, they are also the first 1st party to produce a wireless RF controller (GC, Wavebird). Hopefully, this will be another innovation in the same vein... rather than falling in line with the Virtual Boy (which I enjoyed for the most part) and 64DD (I still wish that came out here).