Why Do Firms Take Risk? — The Source of Returns

A firm that takes no risk shrinks, little by little, below its cost of capital. Return does not fall from the sky; it is born as the price paid for bearing uncertainty. The Itō Review put this relationship into words as the gap between ROE and the cost of capital. This piece breaks down the management decision — the decision to go after returns — that sits behind aggressive materials.

01Even the Choice "Not to Take Risk" Has a Price

Hear the word risk, and the image that surfaces is of something to be avoided, something to be reduced. But seen from the side of management, the story runs the other way. Shareholders do not place their funds for free; having placed them, they demand a certain return. That required level is the cost of capital. If the profit the company earns falls below this level, then even when the books show black ink, by the shareholders' measure no value has been created.

So "doing nothing, safely" is not safe. Fail to produce a return above the cost of capital and value erodes; management that does nothing but avoid is choosing slow contraction. Taking no risk is itself a risk to the enterprise. When a firm deliberately accepts uncertainty, it is not bravado but the result of following this arithmetic. The contents of the cost of capital itself were treated in The Capitalist's View, Vol. 2, "Why Profit Is Required."

02Where Does Return Come From? — The True Nature of the Premium

So where is that return born? The starting point is the risk-free yield, which can be received almost for certain. Even a safe asset such as a government bond carries a little interest. A business's return is explained as something added on top of that safe foundation. The add-on itself is the reward for bearing uncertainty — the risk premium.

From this decomposition one fact comes into view. A high return always has borne uncertainty corresponding to it. The source of return is neither cost-cutting nor thrift, but the very act of bearing uncertainty. The more uncertain the business, the larger the add-on demanded, and as a result the higher the cost of capital for that business.

03What the Itō Review Put Into Words

What translated this relationship into the language of policy was the Itō Review of 2014. The report called on companies to sustainably produce an ROE above their cost of capital, and offered ROE of 8% as one rough benchmark. What weighs more than the figure of 8% itself is that it placed the question "are we above the cost of capital?" at the center of management's inquiry.

In other words, the question is not whether profit is being made, but whether it clears the level the providers of capital require. Principle 5-2 of the Corporate Governance Code likewise asks listed companies to be conscious of the cost of capital when formulating management strategy. Taking risk to generate return is positioned not as overreach, but as a discipline imposed on management.

04To the Materials-Review Floor — "Stopping" Has a Scale Too

How does all of this connect to the practice of review? You might think the reviewer faces materials, not investment decisions. Yet aggressive advertising and bold information provision are, in most cases, the expression of a management decision to go after returns. Behind them lies the pressure to clear the cost of capital.

Precisely for that reason, when you stop something, you need to understand that the cost of stopping also sits on the scale. Block a single piece of material, and an opportunity is missed in the process. The phrase foregone profit always attaches to the reverse side of an aggressive decision. This is not to say "so let it through." Only once you have entered the opportunity cost into the account, and can still show that the uncertainty exceeds the tolerable range, can you stop it in the language of management. What lends a review its persuasive force is not the idea of driving risk to zero, but the idea of separating the uncertainty worth taking from the uncertainty that is not.