The simple answer to your question is that cryptocurrency will replace banks and no one will need banks.
It is natural that people will be more interested in banks if there are more advantages in Bitcoin than in banks. Currently, more interest is obtained from investing in Bitcoin than banks, so the general public is becoming more interested in investing in Bitcoin. But another thing is very important that investing in bitcoins is more risky than investing in banks.
On the other hand, with the presence of Bitcoin, every Bitcoiner feels like they have their own bank, so it is natural for banks to fight against it, because they feel comfortable and are finally disturbed. However, no matter how strong the banks and government are, until now they have not been able to stop Bitcoin, until they have looked for a solution that can benefit it, until finally, even though it is not yet legal, it has brought tax officials to get state income.
Let's remember that some banks are slowly adopting crypto currency, or bitcoin. In my country, some banks are starting to accept crypto currency services; users may purchase and sell crypto currency assets, which is a good indication that some banks will just find a way to implement and benefit from crypto rather than trying to take it down and wasting their time. As we all know, no one has access to bitcoin in the sense that no one can manipulate it, so it's impossible for them to take down bitcoin; they don't have a choice but to implement it and make use of its popularity and modernity. and it will be more beneficial if more banks start to adopt and implement crypto currency services so that many people will have more options to use and will be more aware of and curious about crypto currency. But of course, the government is still very hesitant and cautious about bitcoin; that's why it is hard to implement crypto currency publicly.