Why Rising Prices May Indicate Abundance

I am currently writing a piece with Pierre Desrochers (University of Toronto at Mississauga) regarding environmental trends and economic theory for the conference of the Association for Private Economic Education (see here). In the process of writing up the first draft of the article, I had to revisit another article I wrote (with Desrochers) and I found a passage which now offers me a greater value than when I initially wrote it. In that piece, me and Desrochers basically argued that rising prices for certain environmental goods may not always indicate rising scarcity. In fact, we argued that prices could increase even if a resource grew in abundance.  Here is the passage from our article currently undergoing revise and resubmit:

Thirdly, technological innovations that increase productivity might drive up the price of a commodity without this truly reflecting the scarcity of the resource. Whale oil is a case in point. The decline of the whaling industry in the United States began around 1850 at which point real prices began to increase (Bardi 2007). However, economic historians agree that this was not because of resource depletion or overfishing (Davis, Gallman and Hutchins 1988). Brook Kaiser (2013) thus found that the increasing demand for illuminants created pressures on prices, which in turn motivated the development of substitutes like petroleum-derived kerosene. However, whale bone and oil prices did not fall as kerosene production expanded and, in spite of falling demand, prices stayed high and even increased. The answer to this conundrum is opportunity cost as the important surge in American labor productivity was greater than the observed increase in productivity in the whaling industry. This meant that the opportunity cost of using workers, capital and other resources in the whaling industry was great. These workers, capital goods and other resources were progressively reallocated to other industries. In the process, the whaling industry faced higher costs relative to productivity. While marginal players in the whaling industry exited, the supply of inputs to the whaling industry decreased and prices had to be increased [by the remaining firms in order for economy-wide equilibrium to be achieved]. Hence, prices in that situation are not reflective of depletion or expansion of resource stock.



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