They were buying because they could earn back the extra costs by mining Ethereum. That ended.
Nvidia may have thought that they could permanently increase to that price, but the 4080 sales proved them wrong. Hence the 4080 Super at $999.
I think that's unrelated. MLID said that Nvidia was lowering prices with the Lovelace refreshes to get some gamer goodwill in preparation for a popping of the AI bubble.
I don't think his analysis was wrong there.
Nvidia is surfing on astronomical hype and costs, but that won't last forever. Radeon would also eventually brush off the horrible situation RDNA 3 put them in.
I think the prices were a "F.U price" for customers when they only wanted to sell AI. And now that that money pot seems to get increasingly smelly, they want to sell at better prices.
Which means that I expect AMD to hit quite hard in the 1080p/1440p with Navi 44 and 48, but I really do not expect Nvidia to hold back anything at the higher tiers. Prices will still be high. Not necessarily much higher than Lovelace, but we're going from "no price/perf improvements, much more perf and much higher price" to "some perf/price improvements, more perf and still the same high price".
NV has no reason to lower prices whatsoever, except if it somehow makes their lineup nonsensical (I.E sell a 5060 Ti == N48 for $500, but sell a 20% better 5070 for $800).