You'll need a high-end PC to play Cyberpunk 2077

That may be for minimum if at all. By the time Cyberpunk 2077 comes out, everything else would have been upgraded. It is to come out in a few years with earliest 2020. By then, graphics cards would have probably went up a couple 100 in the numbers and maybe even 4K might not be the highest anymore. That means that 'high end' now may be around the middle by then.

Right now, it requires the GTX 1080 Ti,  but of course, it will be optimized for/with the top one by the time it is meant to come out so it may change, making that as the minimum instead of only and maximum someone can get. I wouldn't call the present high end when looking at what is to come, but at any rate, that game is gonna take a whole lot of power.

Since everyone will upgrade anyway, they are probably making it to be made for continuously upgrading video gamers so that when they do get that big deal of GTX 1080 Ti (which most games are moving to recommending to have), then they will not have a full need to upgrade for a game coming out in a few years. Plus, when they do upgrade, it will not be a bigger high end card or system but instead a smaller upgrade that is not as super high end by that year.