Banks should be fear with cryptocurrency, because cryptocurrency development is so rapid and could replace the current banking system, bank systems are now quite old-fashioned, unsafe and costly to maintain and use them, with the presence of bitcoin and blockchain systems, naturally if the bank system This time should change and may use a blockchain system
Banks may be old but I don't think they will changed what they have used to. Simply reason, they will lose a lot of money if they implement a blockchain technology to replace their legacy system. Imagine data are freely shared amongst its different branches. It has advantages I know, but it will really affect a lot of banking employees if they implement it. They may even cut employees out for all we know. So they are very afraid of this new technology. They still want the old legacy system because its very profitable for them.
Yes if it happens then many bank employees will come to the road and become jobless. Already they are implementing their own bank app and telling users to do all transaction with that app. These small apps make many bank employee jobless. If they implement blockchain technology, i think slowly the physical bank will disappear.