There is quite a bit of elitism in this thread...
Firstly, I don't think people are choosing LCDs over plasma because of marketing, I think people are choosing LCDs over plasma because LCDs look a lot better in the environment where people make the decision as to what TV to buy. Most people are making their buying decisions on the sales floor and the LCD is going to win there. If you weren't an AV enthusiast and had to base your decision on the screens you see at the store instead of hours spent online looking at AVS Forum, which would you choose?
Secondly, I think most modern LCD panels are simply good enough for most people. Most people probably aren't watching movies in a darkened room designed for that purpose. The trend in housing is an open floor plan with lots of natural light. In those conditions, the slight advantage in blacks that plasmas contain are largely worthless. With enough environmental light, blacks on modern LCDs will look black. I personally prefer to spend most of my time in a living area with an excess amount of natural light and the blacks on my LCD in these conditions look just as black as my TV's black bezel. Further, in this space, a matte screen is preferable which favors getting an LCD.
Thirdly, most people don't actually want a screen that most accurately represents colors, they want a screen that best fits their own personal preference. Most people, including myself, couldn't tell you how the producer wanted us to see their designed color on every individual piece of content we own. One, I have no idea what the director, developer, UX designer originally intended. I work in technology myself but I hardly ever view the source code for something as easy as webpages to find out what the UI designer intended for RGB values. And second, even if I had that data it wouldn't really matter as I have no idea how those RGB values *should* actually look. Like most people, I don't find it necessary to drop several hundred dollars to have a display professionally calibrated, and even then, the actual color as I see it will be affected by the lighting conditions in the room. And this all assumes that the source material was also professionally calibrated. And lastly, it is possible that people prefer their own stylistic tendencies to the director's even if they could be assured that the director's vision could be accurately represented. And since the consumer is the one making the buying decision, it's their preference that matters.
I recently upgraded my Galaxy Nexus to a Nexus 5. While the 5 has much greater pixel density, I prefer the OLED screen of the galaxy. Yes, I'm aware that reviewers have determined that the OLED screen doesn't produce accurate colors and it's oversaturated. But, I still prefer it. Yes, I'm aware that places me in the ignorant throng of consumers that prefer "pop" to purity, but it is what it is. Next to the OLED the 5 feels washed out to me. I'll get used to it and I love the 5 for many other reasons, but if I were to ever put those screens next to each other again (like on a showroom floor) I would choose the OLED.
Off topic, late in the life of the Nexus I noticed some retention issues in the notification panel. I'm excited to have OLEDs as TVs but I hope this isn't going to be an issue.