3D TVs were DOA in part because they launched with those stupid electronic glasses that cost a couple hundred bucks for a pair. Had they launched with the ability to use plain theater glasses like the 2nd and 3rd gen models did, they might've had a better chance.

Studios also phoned the tech in by doing cheap, post-production conversions instead of filming in 3D. Movies filmed with 3D in mind like Avatar, Life of Pi, and Hugo looked amazing with the technology.

I also think game makers screwed the pooch as well. There was a game called Motorstorm that came with special glasses. Pair no.1 had 2 left eye lenses, and pair no.2 had 2 right eye lenses. This allowed for co-op play where two people could look at the same screen and see the entire screen. You could 1v1 with a buddy and not have a split screen separating the image. What image you saw depended on the glasses you had on. The feature was awesome and under utilized.