I think the big problem is the fact that people went to go pay to see a movie with a novel new feature that they heard was rather neat. It's not so much that 3D has been "embraced," I think far from it. Really, 3D movies are still a rather new novelty for many modern theater goers. You simply do not see them much anymore.
So, they hear it's cool, they go pay to see it, tell other friends its pretty neat, they go to see it, and before you know it, box office receipts are through the roof. Many movies start to incorporate even basic 3D effects, some theaters show them almost exclusively, so people who are paying to see a movie they wanted to see, not just because it's in 3D< but because it looks like a good movie, are inflating the concept of 3D's popularity. Now, suddenly claims are being made that consumers have embraced 3D, and are ready and willing to shell out big bucks to put it in their homes. I mean, holy crap! Look how much that Avatar film made. People are ready for this! People want this!
Maybe not so much?
This small surge in profitability and theater attendance does not, to me, indicate that consumers are ready and willing to pay $2000 and upwards simply to experience this in their homes, especially if they are a large family, facing the specter of shelling out another $600-$1000 in additional glasses alone, and facing the headaches of how to give everyone a fair view to actually enjoy it.
Sure, there will be some early adoption by the higher incomes, and your usual technophile will orgasm over the very idea of being first on the block to have it, but this isn't really the leap that HD was, IMO. HD was a simple, accessible technology that made a massive "holy crap I can count the grass!" improvement in viewing technology, with no unreasonable required accessory demands on consumers. Really, who wasn't blown away the VERY first time they saw programming in 1080p? 3D is not that.