At the very least: the knowledge and awareness that it's being done to you by others. It might not matter at the beginning, but when someone has but 1-2-3 decades in a place and see people who practice the above get ahead..
It might save a person from becoming homeless by knowing the depravity that they may face and steering clear.
1. Awareness
2. To consciously not do that ourselves
Dark politics affects our characters and peace of mind in the long run.