Decentralization of everything, the great new idea of which the web can’t stop babbling, might still seem a bit utopian if you inspect it closely.
Yes, blockchains are likely to reshape our economy, or a huge part of it, and benefit considerably those who are currently unbanked.
They might also facilitate the creation of rating/reputation systems that are not controlled by any single entity and thus allow people (say Uber drivers who’d like to work for Lyft) to switch employers without having to establish their credibility anew.
They might give users complete control over their assets; protect them, to a degree, from being robbed and provide tools to sustain privacy even when a state-level actor – a bank or a government – is after their identity.