All these expensive consumer GPUs really ever do,is push up the rest of the range. So they exist to make the 80Ti,80 or 70 series look "more reasonably priced". Its a classic marketing tactic.
Edit!!
It has zero effect on me,as I have a budget,expectations of what performance improvements I want in a product,how long I might keep it for,etc. If it doesn't meet those expectations,I have no reason to buy it if the existing parts work fine.
If I can't run a newer game,then it can stay unplayed until my system is up to scratch then. They just expect people to be addicted to gaming and throw money at it.