I could see the 5080 being the lowest tier chip that Nvidia launches next gen, and increasing it's price to $1500, if not $2000. But I also wouldn't be surprised if Nvidia launches their Workstation 5080 equivalent cards first at $4k-$5k and pushed back the gaming cards by a year or two.
Who's going to stop them? AMD/Intel probably are not even going to try to beat the 4090. Even if they could match it in gaming, the 4090 is not primarily being bought as a gaming card, people are buying it for work (And I bet that makes Nvidia unhappy).
Nvidia doesn't even want to waste their precious luxury silicon on gamers in the first place. I'm sure our crumpled dollars would sully their elite brand if us commoners could ever manage to scrape together $2,000 for their lowest tier, entry level product.
Or maybe Nvidia's executives have become so rich, so quickly, they'll just assume $2000 is a really good value and everybody can afford it. Sort of a "I've gotten 20x richer in the last 3 years, so surely even the poorest of people could afford to pay at least twice as much as they could last gen", kind of mentality.
Either way, I'm fully prepared for the next gen to be the worst value and least competitive generation of gaming graphics cards, ever. It's an easy prediction considering their pattern of consistently redefining "worst value" for the current gen, and the last gen, and the gen before that...