Really......
4k has only really taken of in the last 2-3 years and if looking at it from a PC gaming perspective, make that the last 1-2 years, more so since RDNA 2 and ampere along with FSR/DLSS has made 4k gaming somewhat more of a reality now (if it weren't for DLSS/FSR, we would still be chasing 4k60 with max/high settings....). 8k is not going to be a thing anytime soon bearing in mind that 4k was first announced/released in 2012 iirc. Heck it could be argued that 4k is still pretty niche for PC gamers:
And either way, as you said yourself, 8k won't even be a serious thing until the next consoles or even the consoles after that....
Since getting my QD-OLED 3440x1440 display yesterday, I'll be gaming more on this now than my 4k lg oled going forward, as despite being a lesser res., "overall" the IQ is superior and more enjoyable experience. Still going to upgrade to 40xx series for the much better RT grunt
EDIT:
According to steam survey for vram:
Remember the current gen consoles are sold as 8k ready and the next update on them the Ps5 Pro and xbox series x Pro will be out for sure when there is many more 8k TV screens available as they did when the ps4 pro came out by that year of release the 4k screen became the norn to buy and hardly any 1080p tvs. Same will happen again this time. 8k to me needs over 100 inch screens to even be worth using at normal viewing distance and really I think 150 inch will be the sweet spot for 8k screens in the living room but UK homes don't really have the space for them even 75inch and 85inch in most homes means you have to sacrifice where you put them and over the fireplace doesn't count lol.. People that do that learn the hard way later and forget the middle of the screen should be at the normal seating hight and eye level should be straight to the centre of the screen and any higher or lower is not right and equals neckache or a very poor experience.