The CMO tenure explains everything.

A large consumer packaged goods company hired a new CMO. Within ninety days she'd commissioned a full rebrand, restructured the agency roster, and launched a positioning study. Within eighteen months she was gone. Her replacement arrived, looked at the half-finished rebrand, and commissioned a new positioning study. I watched this cycle repeat three times in six years. The brand didn't have a strategy problem. It had a revolving door problem, and every rotation reset the clock.

This is not an unusual story. It is the story, repeated across industries, categories, and company sizes. And it explains more about why brands feel inconsistent than any amount of analysis about messaging frameworks or visual identity systems.

The math doesn't work

Average CMO tenure sits somewhere around two years, depending on which study you cite. Some put it closer to two and a half. Some dip below two. The number fluctuates, but the structural reality doesn't change. The person responsible for brand strategy is almost always gone before the strategy has time to compound.

Brand building is a long game. The strategies that actually work take three to five years to fully manifest. You need time to establish positioning, let creative campaigns build recognition, develop channel maturity, and accumulate the kind of market presence that drives organic growth. Two years isn't enough. It's barely enough to finish diagnosing the problem, let alone solve it. A CMO who arrives in January, spends six months learning the business, three months developing a strategy, and six months beginning to execute it has approximately three months of actual in-market results before their average tenure expires. That's not a track record. That's a pilot test.

The industry talks about brand consistency as though it's a design problem or a governance problem. It's a duration problem. You cannot build a consistent brand when the person accountable for it changes every twenty-four months.

The incentive to restart

Every new CMO faces the same temptation, and most give in to it. The previous strategy is someone else's strategy. It may be working. It may need more time. But inheriting it means inheriting someone else's vision, someone else's agency relationships, and someone else's performance benchmarks. The faster path to demonstrating impact is to start fresh. New strategy, new creative, new agency review, new language. The restart feels decisive. It reads as leadership. And it resets the measurement baseline so that any improvement can be attributed to the new regime.

I've seen this pattern play out with a consumer tech company that had a perfectly functional brand platform. Three CMOs in four years. Each one brought in their own agency, developed their own creative territory, and launched their own campaign. The campaigns were all competent. None of them ran long enough to build cumulative awareness. The brand spent millions on three separate launches instead of investing that same money in one sustained effort. By the time the fourth CMO arrived, the internal team was so fatigued by restarts that they'd stopped believing any strategy would last long enough to matter.

The board's role in the problem

CMO tenure isn't just a CMO problem. It's a boardroom problem. Boards and CEOs hire CMOs with ambitious mandates and short patience. They expect transformation within fiscal quarters. When transformation doesn't arrive on schedule, the conclusion is that they hired the wrong person rather than that the timeline was unrealistic. So the CMO leaves, a new one arrives, and the cycle begins again.

There's a compounding cost to this that rarely gets quantified. Every CMO transition burns six to twelve months of organizational momentum. The new leader needs to learn the business, build relationships, assess existing work, and develop conviction about what to change. During that transition period, the brand is effectively on autopilot. Multiply that by three or four transitions in a decade and you've lost years of potential brand-building to leadership churn alone.

The brands that sustain consistency over time almost always have one thing in common. Not a better framework. Not a more disciplined process. A marketing leader who stayed long enough for the strategy to work. Duration is the hidden variable that explains why some brands feel coherent and others feel like they're perpetually introducing themselves.

What shorter tenure actually produces

When you know you have two years, you optimize for two-year outcomes. That means campaigns over brand building. Launches over sustained investment. Measurable short-term lifts over the kind of slow, cumulative awareness growth that drives long-term market share. The planning horizon of the CMO becomes the planning horizon of the brand, and a two-year planning horizon is not long enough to build anything durable.

I worked with a financial services brand that had been through this cycle. The incoming CMO explicitly acknowledged the tenure problem in her first strategy presentation. She said, "I know the average tenure in this role is two years. I'm going to build a strategy that works whether I'm here for two years or ten." That reframe changed everything. Instead of a sweeping rebrand, she invested in codifying the existing positioning into a system robust enough to survive her departure. She documented decision frameworks, built internal capability, and designed the brand architecture to be leader-proof rather than leader-dependent.

She lasted four years, which is practically a dynasty by modern CMO standards. But the more important outcome was that when she left, the brand didn't restart. Her successor inherited a system, not just a strategy, and had the good sense to run it rather than replace it. The brand maintained consistency through a leadership transition for the first time in a decade.

Building for the transition you know is coming

The realistic response to the tenure problem isn't to wish for longer tenures. Some CMOs will stay. Most won't. The realistic response is to build brand strategies that acknowledge the revolving door and survive it.

That means investing less in charismatic vision and more in durable systems. It means codifying brand decisions in ways that don't require the original decision-maker to interpret them. It means building internal brand capability deep enough that the strategy doesn't live exclusively in the CMO's head or the agency's proprietary framework. And it means designing handoff points into the strategy itself so that the inevitable transition doesn't require starting from scratch.

The industry keeps diagnosing brand inconsistency as a creative problem, a governance problem, or a discipline problem. It's none of those. It's a tenure problem. The strategy keeps restarting because the strategist keeps leaving. Until organizations either extend the tenure or build strategies that survive the turnover, the cycle will continue. And every two years, a new CMO will arrive, look at the previous strategy, and start over.