The TV manufacturers want a repeat of the 'flat panel' effect. It won't happen.
For most people, TV's are a long-term purchase. Provided it still works, they would not normally consider replacing them.
Flat-panel TVs, once they became cheap enough, shifted the paradigm. People replaced perfectly functional CRT TVs, not particularly because the picture was better, but because flat-panel TVs occupy much less space than a CRT. Couple that with a significantly reduced power consumption for LCD TVs at a time when people were being made energy aware, and the CRTs went down to the recycling centres by the truckload. That enabled people to reclaim space in their living rooms so that the TV was no longer the major piece of furniture it had been, feel good about reducing their energy footprint and, by the way, have 'better' pictures (although I still know people who prefer high scan rate CRT TVs over flat-panels).
This was reflected in how fast CRT TV's disappeared from the shops once flat panel TV's got to within spitting distance of the price of CRTs. And often, it was not the high cost TV's that generated the profits. It was the wholesale replacement of hundreds of thousands (millions?) of TVs with low-to-midrange price tags that earned the money.
We won't see this happening again unless there is some overwhelming technology leap that provides a must-have feature. 3D and 4K are not that, and I can't really see anything on the horizon that would. Maybe a virtual floating screen so that you don't even need to dedicate wall space, but I doubt that is within current technology.
Planned obsolescence is the manufacturers best bet to keep TV sales ticking over (maybe that is why they use such damned poor Chinese capacitors - the single most common cause of TV failure), but I'm sure if it was revealed that this was a deliberate policy, the consumer groups would be up in arms!