People tend to forget how long it takes for consumers to actually have an interest in new formats. HDTV was introduced in the mid 1990s and only (really) became mainstream in the past couple of years; primarily because people wanted large flat pannel TVs which were all HDTVs in the past 3 or 4 years. CD was introduced in the early 1980s and took off in the beginning of the 1990s, DVD was introduced in the mid 1990s and took off in the beginning of the 2000s, and even MP3 players didn't really become fashionable until the iPod which came out (at least) 5 years after the first MP3 players.
The big mistake of 3DTV is that it is being pushed way before consumers are ready to think about a new TV format, before the technology is ready, and before there is any content for them.
Now, as much as people say that glasses are a non-starter I personally think that people would accept glasses if they were reasonably affordable (between $5 and $10 per pair); and these TVs would still have some market if the glasses weren't insanely priced (up to about $25 per pair). When these TVs tend to only come with 2 pairs of glasses, each additional pair of glasses is $100 (or more), and people want to be able to watch Movies/Sports events with 12 (or possibly more) people the cost of glasses becomes a serious problem.
