The question: can cryptocurrency beat legacy financial institutions to the point of replacing them?
Bitcoin and other cryptocurrencies have generated significant interest, their adoption rates are minuscule and government support for them is virtually nonexistent. Until governments recognize Bitcoin as a legitimate currency, it has little hope of killing off banks any time soon. Banks across the globe are watching and studying Bitcoin. It is more likely than not that banks will one day issue digital currencies of their own.
Definitely, Bitcoin aren't against the banks nor banks are also against with bitcoin. It is just a misunderstanding of the people around, I know some banks are supporting ICO before and even successful with their project. May this market integration will help both parties to grow and makes them become successful of their targets and goals.