That is what they want you to believe. What do you think the average voter would do if they found out it was yesterday and that prices were never going to be this cheap again? Once the prices started hurting there would be riots everywhere that would bring down governments. Hence push it off until the future and it becomes someone else's problem. The theory of Peak Oil is peak production. There will probably be enough oil for several hundred years but never this cheap or available. There has not been a significant oil find for more than a decade. Oil companies are depleting their reserves and are certainly not discovering enough to replace what they have extracted.

Regardless of whether we are about to run out or not, we need to look at alternatives now. It pollutes our world, it is a finite resource and it is getting more expensive, so we will need to change at some point. The sooner we can find a better alternative, the better.