It's interesting you brought that up because crypto has a similar mechanism to get people to complete the whole transaction and resolve disputes without involving interest rates.
For example, imagine person B was buying a product from A. Should A send the product first or should B pay first.
When both sides don't want to take the initiative, they use an escrow contract on the blockchain where both sides have to lock up 150% to 200% of the value of the product in crypto inside the contract.
A then sends the product.
B receives the product.
If B accepts the state of the product, he can press a button to release the relevant amount of crypto in the contract to A and refund the extra 50% to 100% he had to put up.
If B sees the product is fraud, he presses another button and both sides lose all their crypto. This disincentives both A and B from committing fraud.
There are more nuanced conditions involved so I won't bore you with the details, but the main concept is there and it doesn't involve interest rates.