Do The Math
Most industries are doing good with a 10% proffit margin. Grocery stores have more like a 5% margin, but use a high turnover to get a decent ROI. Gas taxes still leave plenty of room for profit and are passed directly to the consumer not back on the oil companies.
None of that is relevant to the inflation adjusted cost of oil being low. If oil companies could make money at $30 per barrel 20 years ago they sure can now as well without invading a country to "get cheap oil".
Regards,
Mark