The photography industry is tiny compared to the consumer electronics industry. The vast middle ground of photography uses the leftovers of the consumer electronics industry. The first generation of P&S cameras used sensors that were originally designed for camcorders, which matched 4:3 CRT TVs. Current consumer computer monitors use panels that were designed for HDTVs. etc.
3D was the last big thing for consumer electronics and I think everybody agrees that that was a bust. The consumer electronics industry likes to sell everybody all new everything. The last time they pulled this off was with (approx. 2K) flat screen HDTVs/Blu-Ray. If they want to repeat selling everybody all new everything they need to make a compelling case for 4K.
I thought that 4K was ambitious enough that it would be years before anything tangible hit the market. Which was why I was surprised that 4K products are starting to trickle out. Don't judge 4K/Rec. 2020 to be a total failure because the first generation products are a bit lacking. The first $5,000 3 megapixel DSLRs weren't very impressive either.
If (and this is a big if) the entire consumer electronics industry succeeds in rolling out 4K that meets the Rec. 2020 standard, then the massive gamut I displayed in my first post will be the new normal--everybody will be using this gamut. sRGB will be a distant memory, just like 4:3 CRT TVs are now.
We can only hope.
