From a timely blockchain reality check; on a related note, see The Prophets of Cryptocurrency Survey the Boom and Bust (The New Yorker)
"In practice, blockchain is nothing more than a glorified spreadsheet. But it has also become the byword for a libertarian ideology that treats all governments, central banks, traditional financial institutions, and real-world currencies as evil concentrations of power that must be destroyed. Blockchain fundamentalists’ ideal world is one in which all economic activity and human interactions are subject to anarchist or libertarian decentralization. They would like the entirety of social and political life to end up on public ledgers that are supposedly “permissionless” (accessible to everyone) and “trustless” (not reliant on a credible intermediary such as a bank).The Big Blockchain Lie -- Project Syndicate
Yet far from ushering in a utopia, blockchain has given rise to a familiar form of economic hell. A few self-serving white men (there are hardly any women or minorities in the blockchain universe) pretending to be messiahs for the world’s impoverished, marginalized, and unbanked masses claim to have created billions of dollars of wealth out of nothing. But one need only consider the massive centralization of power among cryptocurrency “miners,” exchanges, developers, and wealth holders to see that blockchain is not about decentralization and democracy; it is about greed."