It's fine to say things like "beta was the best, but VHS won somehow"... and while beta might have been technically the best, it didn't matter... because VHS was marketed better and got more people to buy-in.
The market came to a point where "there can only be one". And the winner was the one supported by more manufacturers.
We had a "there can only be one" point with BluRay as well.
I'm glad we don't have an "there can only be one" point with Apple vs Android vs Windows on phones (although a winner is emerging).
IF there truly were lots of fans out there wanting and demanding 3D... we would be seeing more content, not less... and more channels, not less.
It is a chicken and egg situation. But as I see the crests of interest in 3D wax and wane the current one is cresting at the top of the seawall. The next wave will likely be the one that makes it over the top and floods the market with a good technology that works.
There is a demand for 3D ... it remains unsatisfied despite decades (lets call it "over a century") of improved technology. People have accepted that we will have 3D in the future. We're just not there yet.
This thread now has a misleading title... because it presumes that Dish is falling behind in 3D... when the reality appears to be that other providers are scaling back 3D content...
The title is ironic ... and the premise has been disputed since the thread started. DISH decided to wait for better technology and while they were waiting the wave receded. DISH still supports 3D on their top of the line receivers ... they are not out of the game. But there is less content to carry.
There are still more important areas where DISH needs to "catch up". The wane in 3D takes the pressure off for linear channels. They can still do VOD and on demand.