could they stimulate the economy... Yes.
Do they... Some do, some don't.
Do they have to? Nope the idea of DPOS is that the largest stakeholder make the decisions.
Because they have the most to win or lose. I totally agree with that concept....
But in no way does it make them good at it. Mining a token with broken instructions is a cool skill.
It just has nothing to do with being able to build and sustain an organization that does anything.
So, it isn't about being evil or good... It is about a skill set that they frankly don't seem to have.
Or they view Steem as just that, a fund printing machine for other ventures.
I wouldn't say Haejin has zero kills. He doesn't care about Steem. He's more concerned about the value he could extract here for his other projects.