You're arguing semantics, which is useless, and also very wrong.
People themselves have ethics because that's the only way of living in a society -- discerning between good and evil, making decisions that aren't hurtful to others -- these are standards we live by because they work best in improving our own quality of life.
Historically, we can see that people (especially leaders) are as ethical as the laws of their society force them to be, especially when it comes to decisions affecting their well-being (which quite often is their bottom line).
In society when people misbehave, they get marginalized, discriminated against, even abused. E.g. for rapists punishment doesn't stop immediately after jail-time was served, for some unlucky ones the real punishment only begins after getting out of jail.
Things like peer-pressure, the board of directors,
profits, strategy, market pressure and so on can
make good people do bad things.
People with strong character and clear ethical guidelines have always been able to get past the herd-mentality. You really can't excuse morally-wrong behavior just because that person is part of a herd, just as you can't excuse the herd itself.