Re: future of 4:3 displays
CRT is dead and buried, but keep an eye on LG and other OLED display manufacturers. They'll probably start pumping out commercial 4:3 units for video walls soon enough. They'll be pricey, but contrast and black levels should be CRT-like.
In commercial markets, viewing angle, contrast and black levels are the biggest drivers of OLED. But for our purposes, these are only part of the equation. OLEDs may be CRT-like in contrast and black level, but they are very LCD like in their imaging. Advances in LCD technology have almost made OLED moot, unless the price falls dramatically. For this to happen, OLED would need to supplant LCD displays in the consumer marketplace, and that's not likely to happen any time soon, given LCD's technological maturity, and their lower cost of production.
I own several plasma displays, which share many traits with OLED technology. The biggest departures being size and power consumption, but plasmas can deliver CRT picture quality, viewing angles and color rendition. But the units which could deliver this, also suffered from higher cost. It remains to be seen whether consumers will embrace OLED, or whether it will suffer the same end, regardless of the advances in picture quality over LCD. The way it went with plasma VS LCD, tends to indicate that most consumers just aren't discerning enough to pay more (currently,
much more) for what OLED can offer.