Don't you think it would be possible to design hardware so that it is better suited for 3D rendering? Or even something as simple as mandating various standards for supporting features that make the most of the 3D tech offered?
Personally I think the reception of the 3DS will be interesting. If it is a big hit, it could drive the desire to see 3D in games elsewhere too. It could also of course have a negative effect on the already low acceptance of wearing glasses to watch 3D TV. But then stuff like support for being able to see different TV shows with different glasses could push glasses forward again.
I think the push for 3D TV through gaming is currently fairly successful - I read a lot of impressions even from normally quite sceptical people who have seen at least one game by now that sold them on 3D gaming. As it is a feature that will end up in TVs, it has at least the same potential as BluRay had over DVD, in that eventually nobody will buy a device that can only read DVDs, even if the content you watch on that device only gradually moves from DVD to BluRay, and perhaps never fully (like we've just completed watching House season 6 on DVD - which by the way I'd also watched a few episodes of on my fathers standalone BluRay player, and boy the video upscaling of the PS3 blew that out of the water - you almost forget how good that is until you don't have it!)
The biggest problem 3D TVs are currently facing is the morosity of the industry on the movie side of things, which I don't think needs to be repeated here. The ratio between exclusive content and regular content is screwed up, and flat out silly in this phase where industry growth and general acceptance of 3D is still in its infancy. This will have to change if TV manufacturors want to see growth here, and eventually the same holds for the content providers themselves. And then there's the 2D movies that are being upscaled to 3D, which is a really bad idea designed to make a quick buck at the expense of a long term fortune.
But whomever thinks that 3D is ever going to go away again though is flat out wrong. It is very, very clear that 3D is here to stay. There is actually a 3D showcase channel on my cable box already, there are a tonne of games supporting it, there is a rapidly increasing number of movies produced in 3D each year, and it's going through the motions faster than HD ever was. It will go through various changes before it becomes as widespread as HD currently is, but it may actually even catch up and converge with HD in the not too distant future.