Super expensive wine is usually not "ready to drink", but you can find aged wines that qualify. I have opened a bottle of pretty expensive wine (split with friends) way too early and it was meh.
This is a mistake some folks make, they pay $2,000 for a new release Bordeaux or Burgundy and drink it. Something like 7-8 of the ten most expensive wines are usually Burgundies.
I have some moderately expensive wines sitting around that will just sit for a while because I would want to share them with friends.
I let one sit around until my 50th birthday and it was past its prime, still good, but obviously not where it should have been. Lafite '66.