Oil itself is an economic commodity and as such has the ability to cause fluctuations in the economy. It is a problem if you rely on its use and thus have to pay more for it when the price goes up (because of a decrease in supply)causing your other spending to decrease.However, if you sell oil or are invested in oil it is not an economic problem when supply is decreased, for you the problem is when supply is increased and your per barrel profit level goes down. What can be done? Diversification of oil suppliers, Development of Natural gas and other local fuel resources along with investment in decreasing reliance on fuel.