Whenever you read something that predicts the economy will collapse when oil runs out, it's a pretty safe bet that the author does not know anything about economics (or game theory). Oil does not 'run out'. Its price increases and consumption decreases. There are many replacements for oil, and many replacements for oil replacements. Wind turbines will never go out of fashion (as long as the sun shines).
When currently existing wells start drying up, it will be more expensive to pump oil from them, and the price will increase. For oil to dry up, the people producing and selling oil would have to deliberately take losses by selling at artificially low prices.
