In a sense, current conceptions of blockchain are trying to do the impossible. They want the security of a decentralized system with the control of a centralized one. The desire is the best of both worlds, but what they end up getting is the worst of both worlds. You get the costs and difficulty of a decentralized system with the failure modes of a centralized one.
https://medium.com/@jimmysong/why-blockchain-is-hard-60416ea...
In a sense, current conceptions of blockchain are trying to do the impossible. They want the security of a decentralized system with the control of a centralized one. The desire is the best of both worlds, but what they end up getting is the worst of both worlds. You get the costs and difficulty of a decentralized system with the failure modes of a centralized one.