The current trend of blockchain is very high, couple with it's ability to execute millions transactions within seconds, few transactions cost and no third party is require or paper signing. All transactions recorded and kept open, taking alway cross border and languages barrier, excellent in e commences. So many features to change the world. My emphasis is can blockchain has the capacity to replace bank?
System wise I think blockchain and bank are totally different. Blockchain is a technology for digital currency while bank is purely dealing with fiat currency. Although in blockchain is less barrier or much easier to transfer big amount with minimal charge but it has also big risk. While in bank a bit hassle and it takes time to withdraw big amounts specially if it reaches 7 digits but more secure. But in the future we don't know really what will happen if blockchains make some new adjustment specially the trust and security issues will be resolve then maybe this will replace banking system.