3D is dead. ESPN 3D channel was TERMINATED due to a lack of interest.
So I'm guessing by your definition VHS and cassette tapes are not dead either since you can still buy empty tapes?
Nope not dead. But ESPN found the cost too high versus their profits for the limited number of people who were viewing. Didn't help that not many cable provider carried it and those did charged extra or included it in their top tiers.