The Messy Middle On Sale

Dentsu's share price dropped 11% yesterday. The Financial Times reported that Apollo has walked away. Bain Capital remains "interested, but with significant reservations." CEO Hiroshi Igarashi has informed his board that the sale process has effectively collapsed.

When Dentsu put its international operations on the block in August 2025, the initial interest seemed reasonable. A business generating $4.5 billion in net revenue. 120 countries. Recognisable brands. Major PE firms and holding company competitors circling.

Then the tyre-kickers actually kicked the tyres.

Apollo walked. Bain developed "significant reservations." Trade buyers (any other holding companies) backed away. The FT reports the process has "collapsed."

Here's what the due diligence will have revealed that the investor deck obscured and I have written extensively about for the past year: with one exception, Dentsu International is the very definition of the messy middle. The colonial-model middle ground where agencies carry traditional overhead but lack the scale for proprietary innovation or the agility to compete with specialists.

That one exception is Merkle.

I've written about Merkle before. Nearly $2 billion in revenue. 16,000 employees. The Merkury identity resolution platform covering 95% of US adults with 40+ cookieless publisher integrations. Forrester Leader status across multiple categories. Salesforce and Adobe partnerships positioning it for immediate enterprise integration.

Merkle is precisely what Accenture Song, Deloitte Digital, or any consulting giant covets in the post-cookie ecosystem. Pure-play martech companies command 15-25x revenue multiples while Dentsu trades at 10.7x P/E. The arbitrage is obvious.

But here's Dentsu's problem: you can't sell the crown jewel without the rest of the kingdom, and nobody appears to want the kingdom.

The rest of Dentsu International, including the creative agencies, the media operations, the 150+ bolt-on acquisitions assembled under the Aegis umbrella since 2012, operates in exactly the space that platforms are systematically disintermediating. Media planning that Google Performance Max and Meta Advantage+ automate. Creative optimisation that AI replaces. Campaign management that clients increasingly handle directly.

The first round of buyers understood this. They weren't walking away from a bad price. They were walking away from a business model that doesn't escape the deathly middle no matter who owns it.

WPP's share price should also have reacted negatively to the Dentsu news, since they are messy middle bedfellows - but it goes to show that it already has so much bad news built into it that it didn't move as dramatically.

WPP's new CEO has McKinsey advising on a strategic review due for unveiling in the next months. She's described the company's performance as "unacceptable." Revenue declining 5.5-6%. Two profit warnings in three months. Headcount down 7,000 to 104,000.

Dentsu has just provided a perfect litmus test for what WPP might face if the strategic review concludes that a sale or break-up is the optimal path. And the test results aren't encouraging.

Here's what makes WPP's position potentially worse: Dentsu at least has Merkle. A data asset that creates defensible value in a post-cookie world. WPP doesn't have an equivalent.

When WPP sold 60% of Kantar to Bain Capital in 2019, they divested their data and research capabilities precisely when data was becoming the only defensible moat in marketing services. What remains is creative and media operations facing the same structural disintermediation that made sophisticated PE buyers walk away from Dentsu.

If Apollo and Bain couldn't get comfortable with Dentsu International plus Merkle, what does that tell Rose and her McKinsey advisers about the appetite for WPP assets minus any comparable data crown jewel?

So where does Dentsu go from here?

The conventional wisdom says keep trying. Lower the price. Restructure further. The 3,400 layoffs announced in December were supposed to make the business more attractive. Dentsu is selling its historic Ginza headquarters, booking a gain while lightening the balance sheet. CEO Igarashi faces a potential shareholder vote against his reappointment at the March annual meeting.

The pressure to do something is immense. And doing something usually means finding unconventional buyers when conventional ones pass.

Here's my prediction for Round Two:

Scenario 1: Bain Stays In, With Kantar.

Don't assume Bain has fully walked away. Their "significant reservations" may be less about Dentsu International in isolation and more about how it might combine with an asset Bain already owns and has been struggling to exit.

Bain acquired 60% of Kantar from WPP in 2019 for approximately $4 billion. They were supposed to IPO it. That didn't happen. Earlier this year they abandoned IPO plans entirely and began breaking Kantar up for piecemeal sales. The media division went to HIG Capital for $1 billion in January.

But Bain still holds the core Kantar business. Consumer panels with 170 million participants. The Worldpanel division now combined with Numerator. Research capabilities that generate insights on marketing and advertising effectiveness.

Here's the combination that might make Dentsu International viable: Merkle's identity resolution and data capabilities married to Kantar's consumer intelligence and research assets. Suddenly you have something that looks less like a messy-middle agency and more like a data-powered marketing intelligence platform.

Bain's reservations may be negotiating leverage while they assess whether Dentsu International + Kantar creates a defensible position that neither asset achieves independently. Watch this space.

Scenario 2: Havas Merger.

Vincent Bolloré's family controls Havas after its spin-off from Vivendi. Havas faces its own messy middle problem: too small for platform economics, too big for specialist agility. The logic of combining two struggling mid-tier players has surface appeal. Combined, they'd have scale. In reality, they'd have two organisations facing the same existential challenges creating one bigger organisation with the same problems. I've seen this playbook before. Adding scale doesn't create escape velocity when the fundamental business model is what's being disrupted.

Scenario 3: Middle Eastern Sovereign Wealth Fund.

In my 2026 predictions, I argued a sovereign wealth fund like PIF, Mubadala or QIA could acquire WPP or another mid-tier holding company. Dentsu International fits the profile. The funds are aggressively acquiring Western entertainment and sports assets but lack integrated marketing capability to activate those investments. They own football clubs and Formula 1 teams but struggle to market them globally without agency intermediation. Positioned publicly as "investment in marketing's future," it would actually be distressed asset acquisition meeting strategic portfolio integration. The price would be low, but the strategic rationale exists.

Scenario 4: Japanese Conglomerate Vertical Integration.

This is the contrarian bet. A major Japanese trading house or media conglomerate, someone outside the traditional agency ecosystem, acquires Dentsu International not as an advertising play but as a vertical integration move. Japan has models for this kind of conglomerate expansion. If a company with media assets, retail interests, or technology infrastructure saw marketing services as strategic capability rather than standalone business, the logic shifts. The buyer isn't acquiring an agency. They're acquiring a marketing function for a broader portfolio.

If you're a CMO watching Dentsu's sale collapse, the implications extend beyond agency portfolio management.

First, understand that the "messy middle" isn't marketing hyperbole. Private equity firms with billions in deployable capital conducted months of due diligence and walked away. Apollo and Bain are sophisticated buyers. When they pass on a $4.5 billion revenue business, they're making a statement about structural viability, not negotiating tactics.

Second, examine your own agency relationships through the same lens. If private equity won't acquire these capabilities at distressed valuations, what does that tell you about the value you're receiving as a client? The services that Apollo declined to buy are the same services you're purchasing. The margins that made Bain develop "significant reservations" are the same margins in your agency contracts.

One thing hasn't changed since August: Dentsu's Japan business remains a fortress. Q3 organic growth of 6.8%. Operating margins of 24.6%. Ninth consecutive quarter of expansion in a market where digital advertising will reach $114.5 billion by 2030.

The strategic clarity I advocated five months ago is more obvious now than it was then. Take the ball and go home. Sell what you can, even if that means breaking up Merkle from the rest and accepting fire-sale valuations on the truly messy middle. Stop diluting management attention across 120 countries where you can't compete.

But that requires accepting a painful truth: sometimes the boldest move is admitting that what you built doesn't work. The £3.2 billion Aegis acquisition. The 150+ bolt-on deals. The "One Dentsu" strategy that couldn't integrate two fundamentally different business models.

All of the above is cold strategic analysis. But I'm also acutely aware that there are Dentsu employees reading this newsletter right now, and I want to acknowledge something that the FT story and my analysis both risk overlooking:

This is a fundamentally human business. Behind the $4.5 billion in revenue are real people who built careers, relocated families, developed client relationships, and invested years of their professional lives in something they believed in.

There is nothing more anxiety-inducing than learning your business is for sale. Except, perhaps, learning that the sale is failing.

The uncertainty of not knowing whether you'll have new owners, or the same struggling owners, or whether the next round of restructuring will include your role, extracts a human toll that doesn't show up in the FT's reporting.

To those Dentsu colleagues navigating this moment: the analysis in this newsletter is about business models and market dynamics. It's not about your worth, your capabilities, or your future. Whatever happens to the corporate structure, the relationships you've built and the skills you've developed remain yours.

Brandflow is written by Justin Billingsley, who has spent his career on all three sides of the industry's table: senior client, global agency leader, technology founder. First published 15 January 2026 in the Brandflow newsletter on LinkedIn.