Characteristics of Physical Commodities Investment

John, a portfolio manager, is evaluating the inclusion of physical commodities in his clients' investment portfolios. He wants to understand the implications of investing in physical commodities versus financial derivatives linked to those commodities. John is particularly concerned about the cost and complexities associated with storing and handling physical commodities. He considers various commodities, including oil, gold, and agricultural products. Taking into account the nature of physical commodities and their investment characteristics, which of the following statements best describes an intrinsic feature of investing directly in physical commodities?