Why Most of What Gets Called a Moat Is an Expired Coordination Cost
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There is a word that does more damage to strategic thinking than any other, and the word is moat. It has become the standard unit of competitive analysis, deployed in investment committees and board papers as though it described a physical feature of a business. It does not. In the overwhelming majority of cases it describes a coordination cost that somebody once paid and nobody has had to pay since.
Incumbency is not a property of a company. It is a relationship between a company and a set of conditions, and it persists exactly as long as the conditions do. When those conditions change, the firm does not lose its advantage gradually. It discovers that the advantage was never an advantage, but an arrangement, and that the arrangement has expired.
This is happening now across a broader set of industries than at any point since the 1990s, and most of the firms it is happening to are describing it as a temporary competitive pressure.
Innosight has tracked corporate longevity for decades. The average tenure of a company in the S&P 500 was roughly thirty-three years in 1965. By 1990 it had fallen to about twenty. Innosight's forecast puts it at approximately fourteen years by 2026, which implies that around half the index turns over within a decade at current rates.
The number is quoted constantly and interrogated rarely, so the honest caveats belong here. A meaningful share of that churn is mergers rather than failure. Another share is companies leaving public markets for private equity. Index membership is a noisy proxy for competitive health, and the S&P's own selection criteria have shifted across the period.
None of that touches the direction. The trend has held across six decades, multiple methodologies and several distinct economic regimes. Whatever the precise figure, the duration of a dominant position has been compressing for longer than most sitting chief executives have been working, and it has never once reversed.
The explanation is not that competition intensified. Competition was always intense, and the 1970s were not a gentle decade. What changed is how quickly the conditions beneath a position can move, and how expensive it has become to have optimised thoroughly for the previous set.
A company that has led an industry for twenty years has spent twenty years removing everything that did not serve its position. This is not mismanagement. It is precisely what competent management is supposed to do, and it is rewarded at every step.
Processes that did not fit the model were standardised away as inefficiency. People who kept proposing the unfamiliar thing were managed out or learned to stop proposing it. Capital allocation developed the ability to recognise a good project by its resemblance to the last good project, which is the definition of institutional pattern recognition and works beautifully until the pattern changes.
The result is an organisation with extraordinarily high fit to one environment and almost none of the slack required to fit a different one. Fit and adaptability trade against each other directly. A firm cannot maximise both, and the ones that look most formidable from outside are usually the ones that have traded hardest.
This is why incumbents fail in a characteristic and recognisable way. They almost never fail by doing something stupid. They fail by doing, competently and at enormous scale, the thing that used to work. Clayton Christensen's contribution in The Innovator's Dilemma was to demonstrate that this failure is typically the product of listening carefully to customers, protecting margins and allocating capital to the highest-return projects available. Every individual decision is defensible. The aggregate is fatal, and the pathology is invisible from inside because there is no single decision to point at.
The practical work is separating advantages that are properties of the world from advantages that were properties of a cost structure. Almost no competitive analysis we are shown performs this separation, and performing it usually destroys most of the perceived defensibility of the incumbent being analysed.
Genuine advantages are anchored in something outside the firm's own operations. A real network effect, where the product is worth more to each user because other users are present, does not care what building costs. A regulatory position assembled over a decade with a licence attached does not evaporate because compute got cheaper. Physical assets in constrained locations, a port, spectrum, a fibre route, remain scarce because the constraint is geographic rather than economic. These survive shifts and they are rarer than the language of moats implies.
Expired advantages were almost all solutions to the cost of coordination. Operational scale was an advantage when coordinating a hundred people was expensive and only large firms could carry the overhead. Distribution was an advantage when reaching customers required a physical network funded across decades. Brand as a trust proxy mattered most when buyers had no cheaper way to verify quality. Every one of these was an answer to a cost that has since collapsed, and an advantage built on a collapsed cost is not a moat. It is a memory of one.
The third category is the one nobody names: obligations mistaken for defences. An installed base on a technology the vendor cannot abandon. A services business quietly subsidising a licence business. A channel extracting margin for work the customer could now do directly. These are commitments, and they become more expensive to service every year the ground moves. A firm in this position is not defended. It is loaded.
Cross-border company formation is a useful case because the incumbent advantage looks solid from a distance and dissolves under the four questions.
Registering a business in a foreign jurisdiction has historically required a professional in each country: someone who knows the registry, holds the relationship, and knows which form is currently being rejected and for what reason. Fees reflected that difficulty. The stated advantage was a network of those relationships, assembled over years and impossible for a newcomer to replicate.
Run the audit. Some filings genuinely require a licensed local agent, and that portion is real, regulatory and durable. Knowledge of which form gets rejected is not a moat; it is documentation that nobody bothered to write down, and it has a shelf life measured in the time it takes one person to write it down. Coordinating a client across five jurisdictions was expensive when coordination was expensive, and it is the single largest line in the fee.
What remains after removing the coordination is a substantially smaller business than the incumbent's revenue implies, sitting on a genuinely defended regulatory core that is worth partnering with rather than attacking. That is a precise conclusion and a useful one, and it is invisible to anyone who describes the same position as a distribution moat and moves on.
Run the identical audit on a transmission network operator and the answer inverts completely: the coordination component is trivial and the physical position is everything. The method produces different answers in different industries, which is the point of having a method rather than a vocabulary.
The standard objection is that large firms have more capital, more data and more customers, so if a new approach works they will simply adopt it and win. This occasionally happens. Far more often it does not, and the reasons are structural rather than a failure of talent or awareness.
The first is margin arithmetic. An approach that serves a customer at a tenth of the price is not an opportunity to a firm whose cost base, compensation structure and investor expectations are built on the old price. It is a threat to be contained. Defending the existing margin remains the rational internal decision right up to the moment it becomes fatal, and there is no point along the way at which the calculus visibly flips.
The second is that the new approach looks smallest and least attractive at exactly the moment when entering would be cheapest. It serves customers the incumbent does not want, at prices the incumbent cannot profitably charge, with a product that is genuinely inferior on the dimensions the incumbent's best customers care most about. By the time it resembles a real market, the entrant holds years of accumulated learning that capital cannot compress.
The third is the least discussed and the most decisive. Large organisations cannot hold two contradictory theories of the business simultaneously. The new approach requires believing something that the existing business is a standing argument against, and the existing business employs thousands of people whose expertise, status and compensation depend on the old theory being true. That is not a budget problem. No amount of money resolves it, which is why so many well-funded internal efforts produce nothing.
There is a further dimension that changes how an attacker should think about the firm across the table.
McKinsey's work on the economic profit power curve, published as Strategy Beyond the Hockey Stick, found that economic profit across large companies is distributed as a power curve rather than a normal distribution. The top quintile captures the overwhelming majority of it. The middle three quintiles capture close to nothing. The bottom quintile destroys value at scale.
Read against the tenure data, this says something more specific than disruption is accelerating. It says that most large firms are generating roughly their cost of capital, which means the imposing competitor with a recognised brand and substantial revenue frequently has almost no economic profit with which to defend anything.
The practical consequence is that a firm in the middle quintiles has very little capacity to absorb a price war, very little internal appetite for a risky defensive investment, and a board that will read a five percent revenue decline as an emergency. This is not the picture of a well-defended position that market share implies. It explains the sequence attackers see repeatedly: the incumbent responds late, overcorrects, then withdraws. That is what a firm without economic profit looks like when it tries to defend a position it cannot afford.
It would be dishonest to extend this everywhere, and the industries where it fails are the ones where the most money has been lost by people who did not check.
Some positions are protected by physics or by law in ways that no quantity of cheap software touches. Building a competitor to a transmission network, a container port or a licensed bank is a fundamentally different proposition from building a competitor to a claims-processing department, and treating them as one category is how confident people lose capital. The test is whether the incumbent's advantage would still cost what it cost to assemble today. For a grid, it would. For a document workflow, it would not.
Nor do incumbents always lose. Firms with genuine adaptive capacity do renew themselves, and the survivors are usually those that were never as optimised as they appeared, having preserved slack that looked wasteful for years until it became the only thing that saved them.
And novelty confers nothing by itself. Most new entrants fail for entirely ordinary reasons: no distribution, no capital, no customer who cares. Being unencumbered by the past helps only when the past is the binding constraint, and frequently it is not.
Every industry where the incumbent's advantage was mostly a solution to a coordination cost is now open. That is a narrower claim than it sounds and a much larger set than most firms believe they belong to.
The audit is four questions. What specifically does the incumbent do that the customer pays for? Strip out everything that exists to coordinate the incumbent's own operations: how much remains? What did the advantage cost to assemble, and what would the same advantage cost to assemble today? And if the second number is a fraction of the first, what is actually defending the position?
The last question separates the real opportunities from the interesting-sounding ones. Sometimes the answer is that the market is too small, the regulation is genuinely prohibitive, or customers do not want the thing. Those are good answers and the correct response is to walk away.
Sometimes the answer is that the people who understood the problem could not build software and the people who could build software did not understand the problem. That gap was structural for thirty years. It is not structural any more, and every industry where it was the only thing holding the incumbent in place is now in play, whether or not anyone there has noticed.