I think you always need a bank to transact or save the amount of money you have. I think you are a technology developer in reducing transaction time or money transfer but still depend on the bank.
i also think like that,
indeed we need banks to make transactions, such as buying goods. we still depend on the bank, indeed crypto development is very good in transactions. but not all companies are able to accept it, and bank services are accepted by all companies so we still depend on the bank to do something crypto cannot do.