WPP has cut almost 11,000 jobs since the start of 2025. Omnicom just closed a $13.5 billion merger with IPG and doubled its AI-driven savings target to $1.5 billion. **The ad industry isn't shrinking because clients have less to spend — it's restructuring because AI now does work agencies used to bill hours for, and the same question is about to land on every marketing contract, including a modest local retainer.**
Why Are WPP and Omnicom Cutting Jobs While Spending More on AI?
WPP's headcount fell to 97,388 by the end of June 2026 — down 6.4% year over year and almost 11,000 roles lower than where it stood at the start of 2025, with another 1,000 cuts planned before year-end as the company chases £500 million in annualized savings by 2028 (The Drum, 2026). Omnicom closed its $13.5 billion acquisition of IPG on August 1, 2026, creating a combined company with roughly $25 billion in annual revenue and over $100 billion in media billings — and rather than scaling back its cost target after the deal closed, Omnicom doubled it, to $1.5 billion in savings over 30 months, with around 4,000 role eliminations at Omnicom on top of roughly 3,200 IPG had already cut before the merger (AdExchanger, 2026). Two of the industry's largest players, cutting headcount at the same time they're increasing AI spend — that's not a coincidence of timing, it's the same decision made twice.
Is AI Actually Replacing Agency Work, or Just the Hours Billed for It?
The honest answer is the second one, so far — and the agencies themselves are saying so out loud. Omnicom CEO John Wren framed the shift as a billing-philosophy change, not a service cut: "If our ideas generate lots of money, we'll be expecting to get paid for that" (AdExchanger, 2026) — the implication being that fewer billable hours doesn't mean a smaller bill, if the pricing model moves from hours to outcomes. Gartner is predicting the same shift industry-wide: agency fees as a share of total marketing budget are forecast to hit an all-time low of 15% by 2030, which a Gartner analyst attributed directly to AI eroding the traditional agency staffing pyramid (The Drum, 2026). The work agencies built around — junior staff billing hours for first-draft creative, research, and media planning — is exactly the layer AI tools now compress fastest.
Why Are CMOs Actually Cutting Agency Spend?
Gartner's 2025 CMO Spend Survey found 39% of CMOs planned to cut back further on agency budgets, mainly by eliminating unproductive agency relationships, streamlining their agency roster, and renegotiating existing contracts and scopes of work — not by cutting marketing activity itself (DecisionMarketing, 2025). The same survey found 22% of CMOs said generative AI had already let them reduce how much they rely on outside agencies specifically for creative and strategy work (DecisionMarketing, 2025). That's a one-year-old data point, but it lines up with what's happening at the holding-company level in 2026: the budget isn't disappearing, the question of who does the work — and how it's billed — is what's moving.
Are Marketing Budgets Actually Shrinking, or Is the Money Just Moving?
They're not shrinking — they're barely moving at all, and what's inside them is reshuffling. Gartner's 2026 CMO Spend Survey, fielded among 401 senior marketing leaders mostly at companies over $1 billion in revenue, found total marketing budgets essentially flat at 7.8% of company revenue, up just a tenth of a point from 7.7% the year before, with CMOs now putting 15.3% of that budget toward AI — rising to 21.3% among the minority (30%) who call themselves ready to scale AI, while 70% admit their own processes aren't mature enough to use it well yet (Sword and the Script, 2026). The clearest sign the money is moving rather than vanishing: the labor share of marketing budgets actually rose, from 21.9% to 24.5% year over year (MarketScale, 2026). Less going to outside agencies, more going to AI tooling and in-house labor — that's a reallocation, not a shrinkage.
| Model | How it's priced | Who absorbs AI-compressed hours | Best fit |
|---|---|---|---|
| Hourly agency retainer | Billed by the hour or by a fixed block of hours per month | The agency — fewer billable hours for the same output means thinner margins unless the rate goes up | Ongoing work with unpredictable scope and no clear way to define a finished deliverable |
| Outcome / value-based pricing | Tied to results — leads, bookings, a defined deliverable — not hours worked | Shared — the agency keeps the margin AI creates as long as the outcome holds | Work with a measurable result (a campaign, a rebuilt funnel, a defined project) |
| AI-assisted in-house | Software/tool cost plus existing staff time, no outside retainer | The business itself — someone on staff has to run and check the AI's output | A business with the staff time and willingness to own the tooling directly |
Does the Same Math Apply to a Small Montana Business's Marketing Retainer?
Not cleanly, and it's worth being direct about why. The holding-company story is about accounts with layers of billable juniors doing first-draft creative and media-plan assembly — work AI genuinely compresses at scale. A small regional marketing shop running a single retainer for a Montana business usually doesn't have that same layer of fat to cut; there's often one person doing the strategy, the creative, and the reporting already. Gartner's own sample skews toward companies over $1 billion in revenue (Sword and the Script, 2026) — a $2 million regional business shouldn't assume its agency relationship behaves the same way a global holding company's does. And cutting agency spend without a real in-house plan doesn't make the hours disappear; it just moves them onto the owner's own schedule, which isn't free even when it isn't a line item on an invoice.
The question is still worth asking, just scaled down. Multi-location regional businesses across the Flathead Valley, Missoula, Bozeman, and up into Spokane — dealerships, clinics, service-business rollups — are the ones most likely to be running a retainer built for 2023's hours: a flat monthly fee for a set number of social posts, ad tweaks, and reporting calls. The real version of Wren's question, scaled to a Northwest business, isn't "should I fire my agency" — it's "which of the hours I'm paying for every month is AI already doing faster, and is my retainer still priced like it isn't?"