Bitcoin and blockchain have solved many problems already at this their early stages. Many companies have moved to blockchain technology by understanding it's usefulness. The voting system can be designed on a blockchain with transparency. Ethereum blockchain serves as Dapp for developers. Steem blockchain is a blockchain blog where you can earn by writing which have actually superseded Facebook and it's likes. There are blockchain where you can monetize your ads. Bitcoin serves as remittance and is solving delaying issues when it comes to transfers. Yet we are still in its infancy.