Any system is not devoid of a system of morals and ethics.
The issue we have today is one where the elite are completely devoid of any morals, or they have convinced themselves that they are acting morally in some fashion.
This is the issue with any system, whether it be capitalism, socialism, fascism, or communism. A select group of individuals eventually rise to the top, and they work to manipulate the system to their advantage -- just look at the conspiracies that were occurring immediately after Hitler and Stalin's deaths. Watch closely when Kim Jong inevitably passes, and there is a power void in North Korea. History repeats itself time and time again.
We, in general, are a morally bankrupt people, and everyone has been conditioned to act in one own's best interest. "I'm gonna get mine" because everyone believes the system is corrupt and that's how you have to behave to survive, but what people don't understand is it is the people that are corrupt, and this behavior simply perpetuates the corruption.
Too many people think it's a system issue. This place too much faith in structures created by man. This is an issue of hearts and minds. Always has been.