Why My Energy Company Pays Me For Running A Bitcoin Miner At Home

Large-scale Bitcoin mines have economies-of-scale advantages and are able to be set up in jurisdictions with the lowest power costs. Large mines become beholden to government policies or political pressure. Miners and nodes work together to protect the blockchain and “vote” on changes to core functionality. Small-scale mines will have to find areas where they can compete among the much larger, industrial-scale mining farms operated by large entities. As the network hash power increases and the block reward decreases, staying competitive in the long run is not a simple task. The higher the centralization, the less robust the network. Source