You know, I used the words "average consumer" twice to make some emphasis. "Dolby Vision" ? Even I have no idea what that is.... You negated your entire comment anyway when you said "early adopters".
Early adopters != average consumers
Go to the electronics section at Walmart and pretend you're looking for a new TV. Ask other consumers there what they think about Dolby Vision. Ask them about "HDR", "4K", or LED vs LCD vs OLED and see what responses you get. I think some will along the lines of,
"Dude, I just want a big-*** TV for about $600 !"
So which is it ? People buy new TVs for features or 'cause they break down (sooner) ?