I think 3 D was a gimmick back in the 50s when they first did it at the movies and it went away. Again thirty years later in the 80s they tried it again and it went away. Now we are in the last year of the first decade of the 21st century , or roughly 30 years from the last time and it is here again. The difference today is the economic conditions are not ripe for upgrading the majority of the country's tv customers, AGAIN. Most people have just got an hd tv in their home ,due to the digital transition that we just went through. They are not going to spend money on another tech gimmick because the industry is pushing this right now.
Look at Blu-rays and customer acceptance. Many people are still not buying blu-ray discs because of COSTS. I am one of them. I have had a blu-ray player going on 3 years now , and I only own about 10 blu-rays. They are to HIGH and I refuse to pay $25.00 - $35.00 for ONE movie on a disc, no matter what the picture quality is. Besides most dvds look just great upconverted to 1080p on my blu-ray player. Dvds are still reasonable in cost ,especially at Walmart.
Now if they could make 3 -D tvs put out a great picture in HD as well as 3-D, WITHOUT GLASSES, you might have some takers. But if they are selling a great Hd tv at a low cost vs the 3-D tv at high end cost, guess how many people are going with the cheaper hd tv? Especially in these hard economic times with 15 million out of a job. That isn't going to change anytime soon in the next couple of years either. Wrong time for new technology, at the Wrong price, for many customers .