One word. Consensus. Ethereum is not ready yet. When it is ready it will be decentralised. Still, miners need to agree for the hard fork and if they don't jus

One word. Consensus. Ethereum is not ready yet. When it is ready it will be decentralised. Still, miners need to agree for the hard fork and if they don't just like Ethereum Classic they can split. Protocol changes in blockchain projects are about consensus.