How does congestion affects the performance of a service firm be it a bank, warehouse etc?

Materials that are bought in the warehouse are money, so if they stcuk in the warehouse and become slow moving then finally ended as dead stock then money is lost because sitting in the warehouse floor. Money stuck for such affect the performance of the bwarehouse and or a bank.

Always congestion impedes movement

Be to reduce the value of the marginal profitability resulting from transport