There's your problem right there.
But on a serious note, 2xxx/Turing basically kept the price for the same performance level as 1xxx and added the 2080Ti performance tier. DLSS/RT wasn't a useful feature until 1-2 years later. NVidia could get away with it in 2018.
2022 is different, not only is NVidia making a huge jump from Samsung 8 to TSMC 5, but AMD 6xxx was very competitive and there is a 7xxx generation coming. With crypto being less of a factor, a theoretical 4070 will definitely be cheaper than a 3080 if they match in performance.
You might end up not being far off with regards to pricing, but that depends on NVidia being really brazen and counting on (or knowing) that AMD will be late and/or underperform. I've seen so many stupid takes by clickbaiters on YT who are just doing what we're doing here but want to get paid for it. I'm beyond being surprised by pricing or company behavior, but there are definitely market trends and node advances pointing to price/performance improvements, and only a worsening chip crisis will 100% negate that (not likely IMO).