Classic banking isn't going too well. Bitcoin and its derivatives push the limits of banking. Because not everyone has a bank account. Smart phones have entered our lives. Each phone can now be considered a bank. Banks will continue in smaller units. Banking is obliged to change.
Banks are already adapting, it is true that you can use your smart phone as your own bank, but are you using a banking application to do that? Then you're still using the bank, as this becomes more popular banks will find unnecessary to keep as many physical locations as they have now and they will reduce their costs that way, so make no mistake banks are going to remain competitive for a very long time and even if cryptocurrencies take over the world I'm sure that banks will continue to exist.