Not really, the US didn't wait for oil to become more expensive to extract in other countries. It financed the R&D for more efficient extraction for decades, mo

Not really, the US didn't wait for oil to become more expensive to extract in other countries. It financed the R&D for more efficient extraction for decades, mostly for geopolitical reasons, against short-term market pressures, until it eventually became cheaper to extract in the US despite the harder conditions.