If the crypto market develops strongly, there will be a big impact on the bank. Banks will not be able to collect fees when they transfer money overseas to different countries.
It has a huge impact on banks and their revenues are significantly affected, banks will find ways to prevent this from happening. A battle between the crypto and the bank will occur.
bank income source is not only about fee.they still can earn revenue from loans channeled to entrepreneurs and also all trader still need bank services to join in crypto market.