Not only steem. This is a problem we still are fighting with in our realities outside of steem. It is why all the idealistic and nice sounding ideas tend to only work for a short term before they are corrupted.
Many humans love to game systems.
We haven't come up with a sure fire way of addressing these things outside of computers. Things move a lot faster on computers, so what we see happening at a slower pace outside of computers simply happens much faster inside them. It does make it more apparent. Yet it also can drown us with how much of it we see.
It is why I don't claim to think anarcho-capitalism is feasible right now. While it is the most beautiful idea for a future (Utopia) that I currently know of, it is also not realistic because of these things in human nature.
The only answer to that is education, I mean true education, critical thinking, morality, ethics, etc. Yet, it is clear that those calling the shots on education want none of that.