If fundamentals were more or less "instantaneously" reflected in price, then there would not be trends of any duration; there would just be prices jumping from one end point to another in immediate reflection of such fundamentals.
The use of the term 'instantaneous' was a double entendre of your own origin a few posts ago - I would never have introduced the term into this discussion.
Commodity Commercials will be the first market participants to adjust price valuations according to fundamental change into the markets, IMO that is a certainty.