I guess using a profile thumbnail instead of a 3D model is innovation.
It's not just cheap 3D printers. My workplace has whole collection of professional 3D printers at our disposal: multiple Dimension ABS printer models, an Eden Acrylic printer(hate this one in particular), and a couple of Vantage poly-carbonate printers and we're getting ourselves ready for a million dollars DMLS metal 3D printer. The plastic ones have a malfunction at least once every 4~6 months. The metal one can literally kill you if the Argon gas, used to avoid metal oxidation at high laser temperatures, leaks(death by asphyxiation). 3D printers are just another type of printers after all. Anyone would be just fooling themselves if they think that Stratasys products are more human friendly than the usual HP/Xerox/Cannon/Brother products.
Now back on the original topic. I think the technology is ready for consumer level. But being a consumer product doesn't necessarily make it a mainstream product. 3D printing is useful for people that know how to intelligently use it and already have a specific set of objectives in mind. The average Joe has no business with 3d printing. Buying a 3d printer for an occasional toy/statue that you casually downloaded from the internet is just not worth it. 2D printers succeeded in the mainstream market because everybody NEEDS to print school reports, tax reports, CVs, invitations, tickets, pamphlets, etc.
On top of that 3D printing was(and still is) just immensely overhyped by the internet. Blogs/News websites/Comments and people who never even used a 3D printer before just treated the tech as if it was the ultimate home appliance: "buy a 3D printer and print everything else you need". For example another currently overhyped tech field that will suffer the same "disappointing" effect is VR: occulus/omni/hydra VR paraphernalia is useful for some applications but are far from the "holy grail" of gaming/computing for dozens of reasons. Eventually I believe all these techs will become essential parts of daily life but there are still many obstacles to overcome, from product features and services to user mentality and place in the society.
The PS4 wasn't even developed in Japan or by a Japanese, hell it will even be released earlier in the US and Europe.
While I agree with most of what you said I'm pretty sure this is false, at least for most part. During E3 they introduced the Japanese guy who designed the PS4 case. Also there is an interview with a Gearbox programmer(forgot his name) he says that they needed 8GB(instead of 4GB) or the PS4 would be dead. So they sent a guy to Japan headquarters in order to get a new devkit. Finally, the new controller was also designed by a Japanese team (there is an Engadget article about it with some AR demos). I don't think the PS4 was entirelly developed in Japan, but most of it's main features came from there. I have no idea about the exact date the PS4 will be released, but it makes sense releasing it first in the West because the holiday season. The Japanese release will follow in a few weeks max(as it's still supposed to come this year) so this fact is not really relevant.
Whom the gods would destroy, they first teach BASIC.