Power does not corrupt. The corrupt seek power. They do not change when they get power they simply have no need to keep up the pretense that they are not corrupt. It is not surprising that the corrupt are not stopped from gaining power under capitalism because the fundamental basis of capitalism is that humans are inherently greedy and selfish. Corruption is rewarded and expected. There is no major criminal corruption cases in western nations because corruption is legalized.

the adam and eve bit is really well said. The idea of “original sin” is propaganda to make us all feel complicit as if we would do the same evils if we were given the opportunity.