Yes and no, some technologies are stable and are only refined slowly, others you can look at them and go "hmm, that's more of a prototype than a finished product".
For example, office desks, they haven't changed much for a decade or so, yes, new styles come along, but the normal office desk hasn't changed much. High tech stuff is in near constant flux...
You can also look at some products and they are good and usable in their own right - the original Nokia 6110, the 6210, 3110 etc. the iPhone 3GS seems to have levelled off to a "mature" product, the first two generations were interesting, but obviously flawed, but the 3GS (and the 3G with newer software) feel more complete.
3D technology falls into the category of "interesting concept, do away with the silly prototype stuff (the glasses) and we might make a mature product out of it."