You would be suprised at the number of people who don't bat an eyelash at paying that price for a display.
My wife, when she was working her way through college at Best Buy in Thousand Oaks as a cashier would routinely ring up and process sales that were 30-40k in electronics. 20k TV, 5k for speakers, 5k for a receiver, cables, stands, mounts, replacement plans, installation plans.
You would not think anyone would buy this, but their are certain markets that these sell in.
Think about all the athletes, celebs, people who have giant sums of disposable income. Sony needs to just sell 1-2,000 of these displays this year to mitigate the costs in the fabrication process.
They will become cheaper, I remember the first thin panel plasma screen I ever say. $22,000 for a pioneer 42" SDTV, and someone way buying it...