Well, that does eliminate one problem, then, and actually means I might actually get a 3D TV someday. I can’t stand it on big screens, but it’s not so bad on smaller ones.
But, anyways, that doesn’t address the main concept that people would have to be wearing the glasses 24/7 for advertising displays to use it. At that point, I think it will still be cheaper to leave off the polarization coating. There may be some places that opt for 3D as a gimmick, with a big sign telling you to put on your glasses, but that’s all I can see with polarization.
The only current 3D technology I see working is autosteroscopy, and that only if they can eliminate sweet spots as being relevant. The one problems people have with the 3D of the 3DS is that you have to hold the console perfectly still to use it.
And I still agree that, in general usage, 3D will remain an optional extra. The worst downsides of 3D are only there if the 3D is not optional.