Oil barrons merely see global warming as yet another catastrophe to take advantage of for power and profit, they will have their companies pump oil til there's not a single drop left to pump anywhere, using every excuse they can find to keep pumping and polluting while evading taxes and regulation as much as possible. They are evil scum and belong in jail for their lies and behavior.
Drug dealers are arguably pretty evil...but there is undeniably huge demand for the products. And getting rid of a dealer won't solve addiction itself.