Complementary assets
Complementary assets are the resources, such as distribution or manufacturing, needed to capture value from an innovation.
Inventing something valuable and profiting from it are different achievements. Complementary assets often decide who gets the second.
Complementary assets are the resources and capabilities, beyond the innovation itself, that a firm needs to bring an innovation to market and capture its value: manufacturing, distribution, brand, service, and access to customers. They are why the pioneer of a technology is frequently not the one who profits from it.
The innovator does not always win
A recurring puzzle in strategy is why inventors so often lose to imitators and followers. Part of the answer is appropriability, how well the innovation itself can be protected. The other part is complementary assets. When an innovation is easy to copy but hard to commercialise without specialised assets, the firm that owns those assets, not the one that had the idea, tends to capture the value. EMI invented the CT scanner and was driven from the market by larger medical-equipment firms with the manufacturing, distribution, and service the innovation needed.
Specialised versus generic
The decisive question is how specialised the required assets are. If commercialising the innovation needs only generic assets available from anyone, the innovator can source them cheaply and keep the value. If it needs specialised assets controlled by a few incumbents, those holders have the bargaining power, and the innovator may be forced to partner on poor terms or be displaced entirely.
What it means for innovators
The practical implication is that a good idea is rarely enough. An innovator must think early about which complementary assets commercialising it will require, whether it can build, buy, or borrow them, and who else controls them. Sometimes the right move is to give up some of the technology's value in a partnership in order to capture any of it at all.
Complementary assets explain a recurring and bitter pattern: the firm that takes the risk and does the inventing watches the profits flow to whoever controlled the unglamorous assets needed to turn the invention into a business.