Is the answer money? I bet it's money.
Oil manufacturing is easy, and infrastructure is there already. Green energy is new territory and requires r&d. I’m not advocating for oil, but why would they ever change? They do OIL. That’s like asking a cow farmer why they aren’t selling vegetables.
Climate - truthful information about climate, related activism and politics.
Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.
As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades:
How much each change to the atmosphere has warmed the world:
Recommended actions to cut greenhouse gas emissions in the near future:
Anti-science, inactivism, and unsupported conspiracy theories are not ok here.