Honestly, lenses that are close to what is in the 3DS was also being demoed for PC monitors, and with that how long can it really before it's in your average TV? Much like HD didn't get too far till just about every TV on the market was one, I don't think 3D will ether. I look at it like the transition from black and white TVs to color, I bet there where many that said, "Ya, it's nice to have color, but I'm not going to pay a lot more for it" back then too.
Like several have said, I do think that the depth that a 3D display can put out can help in many kinds of games (I want a 3D Boom Blocks... that would be kick ass). Take a platformer like Mario 64 or Banjo Kazooie, how much easier would the jumping be if you could better judge the distance, or lobbing Grenades in a FPS. It's not something that would make the game take a huge jump, but any improvement is still an improvement. And that's just game play, in my time seeing films in 3D, the ones that do it best almost always are the 100% computer animated ones (Avatar, Toy Story 3, How to Train Your Dragon). Since games usually are completely made in the computer, I'd say the best stuff in 3D may come from games after all.
The funniest thing I heard is that what makes a TV 3D or not 3D costs the maker next to nothing... so all the mark up that the TVs themselves have is made up (I've just seen an under 2000 buck 120 HRZ TV.. aka it refreshes as fast as a 3D TV). If Sony was real about there pushing of 3D, they'd maybe give themselves a 300 to 400 buck difference in cost from 2D to 3D and update all PS3s so they can run 3D movies (worked to fight for Blu Ray vs HDDVD fight) along with the 3D games, and also have some popular games 3D with a free patch (I'd imagine that could be done cheep and fast). Right now it's content that is as big a crutch as the price. I think that the only two movies I think you can get in 3D right now is Monsters vs Aliens and Cloudy with a Chance of Meatballs and there's little word on things coming at all the rest of the year.
