I guess that's part of my point. LCD is a mature technology and I believe that QDEF is helping to extend its life and improve it's quality. I remember buying my first 36" HDTV CRT and what that cost. 10 years later a top of the range backlit LCD or Plasma is half the price. I'm sure the same will happen to OLED...in time.
If the manufacturers can get good yields from OLED and once the ramp up costs have been written off, I'm sure OLED will come down to today's LCD prices. That said, I reckon we're looking at 5-10 years for that.
I agree wholeheartedly about Plasma. I'm a huge fan. If my Kuro died today, I'd almost certainly go out and get a top of the line Panny. Heard something last week about a top of the line 65" panny for $2600. (Would love a projector, but I don't really have a good space for that until I gut the basement). If I could pick up a 55" OLED for under $4K, I'd consider that (but not a v1.0 product). The problem with Plasma is that most manufacturers are shutting down production and consumers still perceive it as the technology that it was 10 years ago: burn-in issues, very higher power consumption, etc.
It's unfortunate that it all really comes down to marketing. If you tell the general public for long enough that a 1" thick LCD is the hottest thing, they'll buy it without a clue about edge lighting, backlighting, etc. These fancy looking sets also have a very high WAF too. So people run out in droves to buy them, marketing people love it: another cash cow. It's a vicious circle.
I'm dying to see a QDEF set and see if it measures up to it's promises (ditto for production OLED). I'm going to be replacing a 7-year old 720p plasma in the bedroom in the next year or so. It'll be ineresting to see what my choices are.