What can a financial institution frequently do for a surplus economic unit which it would have complexity doing for itself if the surplus economic unit (SEU) were to deal directly along with a deficit economic unit (DEU)?
Usually, Surplus economic units do not contain the expertise to find out whether deficit economic units can and will make good on their obligations, so it is hard for them to predict while a would-be deficit economic unit will not pass to pay what it owes. Such type of failure is likely to be devastating to a surplus economic unit which has lent a proportionately large amount of money. on the contrary, a financial institution is in a better situation to predict who will pay and who won't. It is also at a better position, having greater financial resources, to sporadically absorb a loss while someone fails to pay. (It is just one example of the beneficial things financial institutions do for SEUs)