As a very specific example, I can go to a bank with my W-2s and credit history and get a mortgage. That’s a complex and valuable decades-long relationship they’re facilitating.
It's not hard to imagine your tokenized income stream and tokenized assets, algorithmically qualifying you for a defi loan with out need for some guy at a physical desk in a physical building.
Hence it's also not hard to imagine the economic value you attribute to banks, as value eventually accruing to crypto.