"LED TV's haven't taken off."
Updating an old CRT to a flatscreen was an easy sell.
Updating a 3 year old flat screen to another flat screen is a lot harder sell.
(I just pulled the CCFLs out of my 7 year old flatscreen TV and replaced with led backlights. 13 quid vs 300 is a nobrainer.)
"OLED's have died a death."
Not at all. Same problem as above.