If a 7800XT is around 20% faster than a 3090 then that would mean it's around 35-40% faster than a 6800XT which is fine if the price stays the same (bear in mind the 3080 delivered 65% increase over the 2080 for the same money) if it increases to $800 then it's around a 25% price hike for 35-40% performance which doesn't look so great especially if you can get a 3090/3080ti for around $700 or less.
Zen 4 just released on the 5nm process and delivered around a 35-40% performance uplift yet the prices stayed the same and even decreased on 2 of the 4 SKUs so clearly the 5nm isn't a huge jump in costs over 7nm while the 7800XT / 7850XT memory configs and board power look similar to last gen so how it costs have risen for a 7800XT by 25% and 54% for the 7850XT.
Don’t worry about that. Apparently AMD owe you nothing
You know what AMD owe themselves? Some market and mind share! They won’t get that with their we are a premium brand pricing strategy. They need a 3080 type card in their line up. They can still price their 7950XT and 7900XT silly.