That's true, but I think the more probable outcome is that banks wouldn't die, instead, they would make their systems adjust and work with the upcoming trend, that is the cryptocurrency wave. We must not forget that banks are business entities, therefore, they would always try to find ways to take advantage of new business systems to make it work for them just like the introduction of credit cards, especially since more people are more accustomed on using it now. I think that as the cryptocurrency market evolves more, banks would soon try to exploit such market more as well.