It sounds like miners could find a replacement revenue stream even if block rewards go to zero and transaction fees are low: Hold the blockchain hostage for rev

It sounds like miners could find a replacement revenue stream even if block rewards go to zero and transaction fees are low: Hold the blockchain hostage for reversal and sell out to the highest bidder! (Of course, this would likely drive the value of 1 BTC to exactly $0) (Edit: This is all a demonstration of how the security of the blockchain absolutely depends on mining hashpower being widely decentralized and distributed)