Yes, and that could be solved if we had a system that was similar to how Witnesses work. A Curator Council type thing, where people vote for curators. Curators would get extra rewards depending on how many votes they had, bad curators would lose votes.
I think the fact that bad witnesses get voted out and good witnesses voted in proves that type of system largely works already. It could do with some adjustments of course.
That's actually what we're trying to do with the HoboDAO. But it will be specialized for decentralized journalism. However, nothing prevents any communities from copying our design and doing it for art, music or whatever.
Good stuff! Good luck in that endeavor!