In my opinion, DeFi is just a platform, where they offer financial management services, the products are the same as banks, so their position is still the same as banks.
The banking world will never be replaced just because of cryptocurrencies, and what happens is that they will make peace with crypto and make certain coins that are considered valuable as part of their products, such as savings, loans, or financing products, and loan products become one of the flagships of almost all banks in the world.