There will be times when the struggle seems impossible. Alone, unsure, dwarfed by the scale of the enemy. Freedom is a pure idea. It occurs spontaneously and without instruction. Random acts of insurrection are occurring constantly. There are whole armies, battalions that have no idea that they've already enlisted in the cause. And even the smallest act of insurrection pushes our lines forward. Tyranny requires constant effort. It breaks, it leaks. Authority is brittle. Oppression is the mask of fear.
One more component is time. Oil is fossilized energy, created over millions of years of sunlight collection and geological formation, at no cost to us other than removing it and processing it into the different forms. Until it becomes too costly to find and extract, it will always be the preferred source as it is so energy dense.