The hidden weaknesses of performance marketing

“What gets measured gets managed” is often written by Peter Drucker. However, according to the Drucker Institute, he never said it. Author Simon Caulkin traced this quote to VF Ridgway’s 1956 warning about moderation.

Caulkin’s point was that the phrase is a warning, not a slogan. What is measured is managed, even if the measurement is useless, and even if the management hurts the organization.

Marketing seems to remember the slogan and forget the warning, it’s getting worse. When measurement thinking takes hold (which I would call looking over the hood of a car instead of down the road at your destination), you get used to simple, measurable proxies like ROAS, CAC, and CTR.

Ultimately, you own a dashboard instead of a product. Numbers instead of meaning. Logical signs instead of emotions. Finally, you prepare a metric instead of an outcome.

I’ve already made a demand-side version of this argument in another article: Performance marketing captures demand but doesn’t create it, and products grow faucets while ignoring the reservoir in what I call the plateau of indifference.

But here’s the part that should worry your CFO more than your CMO. Optimizing performance metrics isn’t just slow growth. It makes your product fragile.

Why marketing efficiency can create weakness

In his 2012 book “Antifragile,” Nassim Taleb draws a three-way distinction. Fragile materials break under pressure. Hard materials are resistant to breakage. But weak things become stronger as they face difficulties. Consider lifting weights. Muscles break, only to heal. Antifragile.

Here’s what it looks like in marketing. Optimizing removes everything that can be measured from a model. Laziness, weakness, immeasurable. If it cannot be improved statistically, it is cut as waste.

But the most important thing of the day in this era of AI is disappearing from performance dashboards: having a purpose, a reason for the customer to choose you when you are not the cheapest option in front of them. Cut that, and your numbers look better, smoother, more efficient. You have a high ROAS. Low CAC. Until you don’t.

A brand without meaning has no buffer. It leases a demand from the future by discounting its value in the present. It looks great on the dashboard.

But it’s not so good when a competitor builds a niche, when your CAC inflates, when a platform rewrites its algorithm, or when AI pulls acquisition away from the performance funnel you’ve spent a decade preparing. Then nothing keeps that customer in your orbit.

Being on a plateau of indifference is not just stagnant growth. It’s like a porcelain bowl that sits in the middle of the court during an NBA game. It is fragile, sitting quietly on the balance sheet like an asset, until a rival pass smashes it out of sight.

Meaning is an anti-fragile commodity

The opposite of a fragile type is not one that survives chaos. He is the one who gains a share because of that chaos.

An analysis by Alex Biel and Stephen King, cited in Kantar’s recession research, found that brands that increased advertising during a recession gained more market share than brands that made the same move during a boom, about +0.9 points versus +0.5.

That’s antifragility at work. The same investment paid off more when conditions worsened. That is the definition of antifragility. As a result, your muscles grow even more when there is no one else in the gym working out.

In a crisis, weak competitors reduce their capital and disappear. Antifragile takes the opportunity to grow in strength and, deeply in this era of AI, is very visible.

Kellogg’s is a textbook case. When the Great Depression began and the letter market split evenly with the Post, the Post did the predictable thing and cut back on its advertising. Kellogg’s doubled its budget, aggressively entered radio, and built a brand around new cereals: Rice Krispies, Snap, Crackle, and Pop.

By 1933, with the economy still in ruins, its profits had risen by nearly 30%. A century later, it is still one of the most durable products in the supermarket.

Product description builds that strength. As Binet and Field wrote over the years, and their 60:40 rule is expected, infidelity comes from a reinforcing definition, not from spraying price promotion messages all over the place.

A lot of reference to the use of activation, where the return decreases quickly, and it starves the part that is combined with both the buffers.

None of those benefits require luck. Volatility is the reason they happen. Competitors who cut back to protect short-term efficiency, while finding comfort in their performance dashboard, offered them without objection.

AI reveals weaknesses

I’ve written about how AI-mediated acquisitions are revealing brands with meaning rather than media budgets. The antifragility framework explains why that is dangerous for a business optimized for efficiency: for all your discount shopping efforts, you are being ignored by AI.

The function of depression, in Taleb’s world, is to reveal hidden weaknesses. For years, the brand could look healthy because their dashboards were green, with flowing changes and ROAS capture.

AI is the shock that pulls acquisitions into the funnel that dashboards measure and reroute with systems that learn meaning, reputation, and resonance, not price increases.

Products that trade on the definition of efficiency do not receive a warning. They simply stop being praised. The dashboard didn’t see it coming, because the dashboard is the problem.

Build a buffer before the shock

Here’s the trap within the trap: you can’t buy your way out of a crisis. Descriptive compositions are slow and cannot be submitted by the deadline. The real question for your next budget review is not “What is our ROAS?”

A new risk question: What happens to our demand the day our workstations become too expensive, inefficient, or distributed?

If the answer is “It’s disappearing,” you don’t have effective marketing. You have a weakness, and you use your budget to deepen it.

Stop promoting your product towards the cliff. Solve something, prove something, stand for something so that when weakness comes, and it always does, yours is a symbol that becomes stronger.