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.