I donโt think it works under a bitcoin standard where you borrow bitcoin and pay interest in bitcoin.
Where does the interest come from? You can see problem at the extreme. For example, if I could borrow 21 million bitcoin (all of it) itโs impossible to pay any additional interest because nobody can create more.
As more and more bitcoin is borrowed, it becomes more difficult to repay interest.
Fiat solves this problem with liquidity injections whenever the banks run into problems.
People did lend gold but it was centralized and fractional reserved making this easier. And still banks were constantly failing. Bitcoin is more readily held in self custody so the this would make banks fail even faster.