Agreed, if it delivers on performance (2 jumps, 60ish %), it will definitely sell even for that price (the leaked price might be a misdirect, hopefully).
We went 2 years without a new top card, that hasn't happened in 10years+, if there is even a slight risk of that repeating itself, people will also use that to justify buying the 3090. Nobody knew at the time that the 2080Ti would reign for 2 years and not 1, but that has probably made the people who bought it at launch appreciate it more in hindsight completely forgetting the price tag.