As common with articles that speak about "human nature" or other such things, they make an assertion that the study does not. The study seeks to provide a possible explanation for the _origin_ of exploitation in society. It does not, in fact, support that "exploitation is a basic property of human society".
Disappointed in the essentialism.
If they say why, tell 'em that it's human nature.
TL,DR: Once you are understood aka solved aka hacked, you are always hacked. A player in virtual machine, looking for ways out, constantly in the defense.
Thus psychology is a classified information, because it allows for humans to hack other humans.