Its a gimmick to sell new tvs ,duh. Just like 4k was. When we changed from SD to HD there was a marked difference in picture quality that you could clearly see with the naked eye. There has been no marked difference between HD and 4k ,but it was sold to make you upgrade your tv , avr, blu-ray players and such to 4k . They will sell 8k as more pixels ,which there will be , but you won't be able to see it with the naked eye unless you sit up close to the screen just like with 4k. But many will pay to upgrade their tvs and other equipment to get the newest and latest technology because they think they will have to have it. The industry itself depends on people doing this every 5 - 10 years now to keep it churning out and selling more tvs and other video/audio equipment.