Family banking
Some of the wealthiest families run an internal bank. The idea is more accessible than it sounds.
A family bank is simply a deliberate structure for lending within a family: shared principles for who can borrow, on what terms, and how repayment works. It keeps interest in the family, teaches financial discipline, and turns ad-hoc requests into a coherent system.
Historically this required lawyers, trustees, and administration few families could sustain. Software collapses that overhead - letting any family run something that looks and behaves like an internal bank, with the documentation and rigor that used to be reserved for the ultra-wealthy.
See how Pari structures family lending.