Cars are a poor comparison, as they are critical for infrastructure and commerce.
Entertainment is a mere luxury and not significant in the larger scheme.
Many of our members only have TVs with 720p, and are perfectly happy with them, and have no intention of upgrading to 1080p.
4k will be a spectacular failure, much like the bluray format is compared to vhs and dvd adoption. Digital files have replaced them for flexibility and forwards improvements at a much quicker pace.
Team Negative1