When we building private/consortium blockchain network with Ethereum for cross enterprise business scenario, we need to consider difficulty/gasLimit in initial genesis file to make fast transaction than public ethereum network.
We also know all transactions are NOT free, they need to pay their transations with eth coins. And they can earn eth coins via mining, but not all nodes will become mining nodes, for example, in https://labs.eleks.com/2016/10/secure-document-transfer-built-top-blockchain-technologies.html, how the client nodes can earn eth coins? buy from others? Any suggestion/practice from real project?