I can't help but laugh at some of the naysayers here.
Just think this through. The design for the 2000 series cards will be been signed off years ago. At that point, Nvidia wouldn't have known that AMD weren't going to be able to produce something to compete. The implications being that they would almost certainly have expected to introduce the 2080 as a direct replacement for the 1080, and at the same price, i.e. maintaining the usual fairly static price, but improvement in performance.
This time around, AMD have no competition, so all Nvidia has done is upped the price on the new cards. Chances are that they've added 50% markup in profits for everyone of the new cards.
Assuming they sell, Nvidia are looking at a bumper year in profits.
I think when the 2000 series design was signed off years ago NVidia probably assumed that AMD would still be very competitive and therefore decided they needed something novel like RTX and DLSS to make their cards standout from the competition.