I always find it fascinating that immoral cultures invented “ethics” because they created economic systems that were inherently immoral and needed a way to rationalize the hurtful actions the system they created now requires them to take.
Arguably every culture is immoral to some degree; you can't reach perfection.
However, GP has a point: people follow incentives like water flows downhill. Most talk about ethics exists to highlight situations where economic incentives make people do immoral things.