I would immediately buy a new TV if it supports 3D. But there are none to buy cause people didn't wanna wear glasses. I believe all those kind of gadget therefore will fail.
eh. you never wear sunglasses? 3D tv failed because even with glasses the experience was less than optimal. The right experience (apparently the beach) people will wear glasses. The technology may not be there yet, but thats where it's headed. I think your prediction of failure for all glasses is not going to age well.