The banking industry can inculcate the use of blockchain into it's operations. Be it a deposit money bank, merchant banks, or even the Apex bank( Central bank) in a country. But I think if the Central Bank can start it, then it's possible. For instance people buy Government bonds through the banks or even shares of some cooperation, using currency. Imagine people doing the same but using Bitcoin at their disposal to buy bonds or shares. That would be awesome.