Regarding the course materials about Resource Scarcity, please explain why Simon won the bet, although the demand for each of five selected metals

Regarding the course materials about Resource Scarcity, please explain why Simon won the bet, although the demand for each of five selected metals increased over the period 1980-1990.

Using this info may help- please summarize to answer the question: http://archive.wired.com/wired/archive/5.02/ffsimon_pr.html