Yes, they do, you just think ethics aren't a thing. The problem here is you.
I used to believe like you do and I still behave that way; however, is 'ethics' really a thing anymore? All day, every day, I see unethical actions that nobody addresses. Look at how Bin Laden was captured. Nary a peep out of anyone. Look at how Supreme Court justices are somehow fortunate enough to be able to have 'friends' who gift them things a common person could only dream of. I will not even mention 'he who should not be named'. Congress is a mess of unethical actions that they can not even be investigated for anymore. ABSCAM anyone? What about the straight up looting of the Social Security fund. Yeah, yeah, I know, it is all safe in government bonds... and yet somehow or another, even just 10 years after the law passed that allowed it, there were cries about how the Social Security fund would be insolvent. When that law was passed, the Social Security fund had 300 billion dollars in excess funds. Once that money became part of the General Fund (through Bonds), it all evaporated.
No, there is nothing ethical about this world. I feel like a sucker for trying to be ethical within it.