Finding the right balance of incentives needs some trial and error. The discussions are not new and well known e.g. with generic prediction markets like Augur or Gnosis.

I think we will find a way to deal with those issues. Experiments like these will help us (and society in general) to come to the right conclusions. Of course we should be careful not to cause too much harm on the way.

Also see https://www.reddit.com/r/ethereum/comments/529o5p/flightdela... and the discussion there.