Every generation of GPU's (except maybe Nvidias GeForce FX series?) has performed better than the one before it.
In the 1950's amplifiers had tubes and were large heavy and expensive. In the 1980's they had transistors, had shrunk and had many more features at a much much lower price.
In the early 1990's that big honking desktop had less processing power by orders of magnitude than the phone that is in your pocket today, and cost much more for the privilege.
There is an expectation that doing the same thing in tech eternally continues to get cheaper and cheaper over time, at least adjusted for inflation.
If it's going to go in the opposite direction and actually get more expensive, it had better be truly exceptional, and I don't think the 4070ti is.