The LA port issue is mentioned in the article and seems to be severely misunderstood. I work with one of the senior attorneys of the Port of Los Angeles in my side job. The primary problem there, and Long Beach and many other ports, isn't anything economically driven at all. It is lost space. Even more specifically it is vendors not retrieving their containers because its cheaper to leave the container on the dock and store it in their own warehouse.
So the moment a graduated price hike was introduced for container parking (just very recently) one of the major US vendors conveniently found warehouse space for 5000 of their containers sitting empty on the LA docks. Think about this like using airport parking for your car as opposed to metered parking on a street in front of your house (everyone's house) and until recently the airport parking was substantially less per day.
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I would have loved for the article to focus more on housing, because I see that topic frequently come up on HN from people on the west specific, especially San Fransisco, and they always get this subject incredibly wrong to fit their localized price/inventory dynamics in way that falsely equates to buying candy bars or fuel.
Here is a deeper exploration of housing using data: https://news.ycombinator.com/item?id=28974793
In short, supply trails demand. In high growth markets, which is not San Fransisco, the frequency of demand for a fixed asset versus the speed of supply is almost solely responsible for shaping the product definition.