I couldn’t comment to be honest as I don’t really follow those regions and don’t even pretend to have any expertise.
I think Bordeaux suffers from being a lot more commoditised than some of those other regions. Especially with the “hype” cycle of an en primeur campaign, for example, and all the price comparisons that go along side that.
To your question about the US, slightly different as it’s not exactly widely exported to EU/Asia, but I would suggest you see a lot of posts about people getting allocations for wines that were previously impossible to get, and for example in the Ridge thread people are finding it too pricey or even above secondary market valuation, so isn’t that starting to happen?
Eg here
The US system of course has the benefit of not really being free market, either, which means it’s easier to obfuscate price falls compared to over in the UK where secondary trade on e.g. BBX, Farr, L&W and Cru manifest effectively as primary sales.
One of the gang on Discord is, for me, effectively the de facto Barolo expert, and he’s finding a lot of Barolo at the moment too pricey for the quality of the juice.
My radical idea to fix en primeur which will never happen for both logistics reasons and, likely, chateau getting screwed reasons, is that en primeur should be a Dutch auction of at least 50% of the production volume.
I bet THAT would throw up some hell of a set of results.