At that stage it is all over. It isn't like registering Mp3.com before anyone knows what it is or picking up Spyware.com on a whim. The next lady next door knows about 3d now. It would appear thousands of 3d names have been registered, to the point where what is being registered sounds little better than random words stuck together.
The actual market for "3D" name is likely to be tiny. Look up every other trend are that has been huge, 3g, VOIP, smartphones, Dubai etc and see how many domains around those terms have actually sold. Companies don't need names starting or ending with 3d to take advantage of the techology. They will use their existing brands in the main. I personally think these trend names have a much lower success rate than domaining in established areas, and when the "wins" happen, they aren't big.
Take 3g.com for example, it has been a park page for 12 years. The best name in that whole overspeculated niche and it still has not found a home. It has been a huge technology but that doesn't mean endusers will be falling overthemselves even for the best names. If you own the best names you have a chance and can sell them to domainers if the ship doesn't come in. If you own the dregs and are registering after every tv show on the planet has done a special on the technology (like those in this thread) you are very likely to lose money.
The usual couse of events is that the names are dropped, as a domainer why even consider developing a name that is worth nothing?
