It's us. Humans. We are the weak link in the chain. Ultimately, there is nobody to blame. We are just born broken.

Human cognition is riddled with exploitable defects. Biologically we are basically just highly pretentious and neurotic monkeys. All of human history is full of people looking for someone to blame for their condition (gods, devils, spirits, corporations, etc) but it never changes. Keep in mind, from an evolutionary perspective we are exactly the same people who were burning witches at the stake and throwing people in lakes to determine their criminal culpability a few hundred years ago. We just have a different set of superstitions and delusions now.