Ritson and Sharp Shared a Stage at Cannes 2026. Here Are the Five Truths They Agreed On.

Two men who built careers disagreeing finally shared a stage

For most of the last decade, the most useful argument in marketing was Byron Sharp versus Mark Ritson. One is the Ehrenberg-Bass scientist who says brands grow by getting noticed by everyone, not by being loved by a few. The other is the brutally funny Mini MBA professor who has spent years poking holes in lazy thinking. They have sparred online, in print, and on stages around the world.

Then, on a Monday afternoon at Cannes Lions 2026, in the Debussy Theatre, they sat down together for a session with a deliberately provocative title: Five Marketing Truths We Can Actually Agree On.

The interesting part is not that two academics argued. It's that two people who disagree about almost everything found a short list of things the evidence makes undeniable. When that happens, you should pay attention. These are the closest things marketing has to settled science.

Here are the five.

Truth 1: Mental availability is most of the job

Both men agreed that the single most important thing a brand can do is build mental availability, the likelihood that your brand comes to mind in a buying situation.

Ritson put a number on it. As The Drum reported from the session, he said: "If your brand comes to mind in buying situations, if you are mentally available, 70% to 80% of your job has been done."

This is the entire spine of Never Always, Never Never. Mental availability is being remembered. As I write in the book, "the brands that come to mind first tend to win." Think of McDonald's golden arches. Recognition alone doesn't sell a burger. What sells the burger is the neural connection between a need (hunger) and the brand. That connection is brand salience, and it is the quiet engine behind nearly every brand you can name off the top of your head right now.

Truth 2: Distinctive assets, not differentiation

The second agreement was about distinctive brand assets, the colors, characters, sounds, and logos that let people recognize you instantly. Sharp described the goal beautifully as "a brand that looks like itself."

Ritson went further than agreeing. He conceded ground. He said he would rewrite the modules in his own Mini MBA, where he had been teaching "brand codes," and use the term distinctive brand assets instead. Watching Ritson publicly retire his own language was the clearest sign of how strong the underlying evidence has become.

This is why brands like Geico protect their gecko and Geico jingle for decades. As I argue in the book, those quick, distinctive impressions are what keep a brand alive through the messy buyer's journey. Without them, the rational pitch never reaches as far or converts as well.

Truth 3: Mass marketing is back, and the math explains why

For years the industry told itself that hyper-targeting had killed mass marketing. Both Sharp and Ritson pushed back. Sharp went so far as to say "the Kotlerian world is a bit wrong," a direct shot at the segmentation-first orthodoxy taught in business schools.

The reason comes down to a number every marketer should tattoo on their hand. John Dawes and the Ehrenberg-Bass Institute have shown that at any given moment, only about 5% of your potential audience is actively in-market. That is the 95/5 rule. The other 95% are out of market today, and they will move in and out of market without warning.

If you only talk to the 5% who are buying right now, you are fighting over a tiny pool at the most expensive moment in the funnel. The brands that grow reach the 95% too, turning strangers into light buyers long before they are ready to purchase. Sophisticated mass marketing isn't nostalgia. It's how you reach the people who aren't searching yet.

Truth 4: Brand purpose is mostly nonsense

This one drew the biggest reaction. Ritson noted that both of them had flagged "more than a decade ago that brand purpose is nonsense." Sharp agreed without hedging, saying purpose "doesn't matter to mental availability at all."

The point is not that brands should be cynical or that values don't exist. The point is that bolting a grand social mission onto a soft drink does not make people more likely to buy it. What makes them more likely to buy it is being easy to remember and easy to find. Purpose theater is one of the most expensive distractions in modern marketing, and two people who agree on almost nothing agree on that.

Truth 5: Consistency, and leaving the cake in the oven

The last agreement was about patience. Marketers kill good work too early because they personally get bored with it. Sharp's line cut straight to the ego problem: "You're getting bored with your own work, but it's not about you."

Ritson's version was funnier and just as true: "You've got to leave your cake in the oven for longer." Distinctive assets and emotional campaigns compound. They build memory structures slowly, then pay off for years. Pull them out of the oven after 30 days because a dashboard looked flat and you waste the entire investment.

The one thing they still don't agree on

The honest part of the session was where they split. The fault line is differentiation versus distinctiveness.

Sharp's position, backed by the data, is that meaningful differentiation barely registers in how people actually choose. His memorable line: "If you need complicated market research to torture data to find your differentiation, you haven't got any." Distinctiveness, looking like yourself, is what does the work.

Ritson's counter is that real differentiation is rare but not extinct. When you genuinely own an association, the way Volvo owns safety, it is worth protecting and building. Both can be true. As System1's Andrew Tindall noted in his analysis, the gap they left open is how creativity actually builds those memory structures in the first place, which is the part neither science has fully nailed down.

Why this matters more in the AI era, not less

Here is the part that connects directly to where marketing is headed. As AI commoditizes execution, every brand can produce decent ads, decent targeting, and decent landing pages at near-zero cost. When the tactics are free and identical for everyone, the only durable advantage left is the one Sharp and Ritson just agreed on. Mental availability. Distinctive assets. Reaching the 95%. Consistency over years.

That is the entire argument of Never Always, Never Never. AI doesn't change what makes marketing effective. It changes who gets to be effective at it. The marketers who win the next decade will be the ones who treat these five truths as the foundation, then use AI to execute them faster than anyone else.

Two of the sharpest minds in the field just spent an hour at Cannes confirming what the evidence has been saying for years. The question isn't whether they're right. It's whether your budget reflects it.

Want the full framework behind mental availability, the 95/5 rule, and building brand equity that AI can't erase? [Read Never Always, Never Never](/amazon).