No they are not, and Microsoft/Sony fans DON'T CLAIM IT THEM BE, the way Nintendo fans want to pretend that everyone from soccer moms to presidential candidates to priest are all sitting around the television every night playing Wii.
I am not some fortune teller, everything I say is an opinion of course and if it comes off as fact then please excuse me.
I just don't see the Wii changing culture like this, sorry if this doesn't fit into your own wants and needs, but I believe that gaming is something done mainly by teenage and young adult males, and that it's going to be a long time before this changes. You think that highschool kids are really that interested in the Wii? Dudes coming home from football practice want to come home to sit down in front of the TV and play Mario Party? I am one of those young adult males, in college right now, saw the PS2 completely clean up last gen driven by the sales of people like me, and now I witness these same people scoff at the Wii as though it's some feminem toy. Silly as that may sound, this is the general feeling I get surrounding Wii.
With this said, by "well running dry" I mean that I do not believe that these "it's a family thing" people can sustain a console for an entire generation. Is Martha Stewart really for the Wii? Or is she going to forget about it in 2 years when the fad and excitement is over?
Can't really say, I'm not a handheld gamer, don't follow the market at all. I've never played the DS, and have only slightly messed around with the PSP before.