It is even more apparent who doesn't actuality know much about commodities. Try looking up a list of what is defined as commodities that are actually publicly traded as such-you will see that the actual real world doesn't fit your perception.
As far as the current "crash," that has a LOT more to do with a supply glut created by industry response to >$100 oil paired with the financial crisis in China slowing demand GROWTH. Bear in mind, however, that demand IS still growing, just not at the rate that was predicted, as no industry or government entity could predict the depth of Chinese financial collapse. Make no mistake though, demand is growing and will continue to do so as developing countries (India, Indonesia, etc) continue to grow.
For you to compare the Oil industry to the steel industry is ridiculous. The steel industry is actually thriving, just not in the US-as we have unionized and regulated ourselves out of that market. Rest assured, the oil industry is NOT in big trouble, and won't be in big trouble during our grandkids' grandkids' lifetime.