No me canso de decirlo

Sin distorsiones del estado/gobierno, la utilidad del petróleo se va a terminar antes que su existencia física:

As supplies tightened and prices rose, producers were motivated to find new sources and develop new technologies. When you hear that only X trillion barrels of “recoverable reserves” of oil exist, remember: The term does not refer to all the oil that there is. It refers to those reserves that are neither too costly to tap at present, nor off-limits because of government policy. Both of those factors can change.