A lot of crypto users anticipate the collapse of Banks some few years to come because crypto is gradually gaining roots as the people become more familiar with its concepts and significance. The banks have got the complete backing of the governments, hence its complete collapse is far reaching. The banks will rather coexist with crypto and integrate cryptocurrency into its services in order to keep the interest of the people as Blockchain grows in significance.
I also believe that the bank will not be deterred by the circulation of crypto currencies, moreover that not many countries accept crypto currencies. and I am sure the bank also has excellent stability with FIAT currencies in each country because FIAT currency will never be replaced.