I buy EP mostly because it appeals to the inveterate planer in me (the one trait I share with my otherwise completely different siblings).Based on current CT data I have around 15 years worth of stock, but probably more realistically 25 years of fine wines requiring ageing. So it’s a gentle downward curve now and a potential test of both my and the wines longevity.
It is also still the way to secure certain wines that either escalate wildly in price after release - if they are indeed even available. This is particularly true of Piedmont, where if I wanted to buy some of the wines I already own now I’d have to develop significantly deeper pockets. And as an aside, I also buy EP direct from Domaine Cauhape because they offer a (ISTR) 25% discount, so it’s a definite saving on even cellar door pricing.
So there’s still a role for it, though interestingly it makes the least sense with it’s inventor, Bordeaux because of the vast quantities available.