In the late 2010s, petrochemicals were seen as the biggest driver of oil demand in the future—and it was a distant future. Yet petrochemicals are already the biggest source of oil demand growth. This growth is only going to accelerate. But first, refiners need to take care of overcapacity. Over the five years to 2024, growth in demand for petrochemicals accounted for 95% of total oil demand growth, Reuters’ Ron Bousso wrote in a column arguing that President Donald Trump’s trade war was a silver lining for the petrochemical industry…