It is clearly true that the use of 3D is not yet well enough understood to get the best out of it.

However, another analogy to the earlier innovations in cinema might be to compare the processing of 2D films into 3D with the "colorising" of B&W films. This was not exactly a success.

There is a fundamental difference though between the introduction of colour and sound to film and 3D. Neither of these older advances required the audience to wear additional devices to take advantage of the technology.

Malcolm