Oil cos. are now monopolies and oligopolies. Oil companies and utilities may bribe politicians, fund opposition candidates, run dirty campaigns, hide their campaign contributions, smear opponents, pack courts, file lawsuits, do PR, and lobby.
Oil cos. oppose high mpg car requirements and efficiency standards for appliances and the electrical infrastructure.
Oil cos. and utilities may try to raise their profits and to prevent competition from wind, solar, water, local utilities, and rooftop solar panels.
Big Oil: Sinopec, China National Petroleum Corporation, Saudi Aramco, ExxonMobil, Chevron, BP, Shell, Eni and TotalEnergies, Marathon, ConocoPhillips