Advertising Agencies Bill for Time and Are Paid for Judgement
The industry moved from commissions on media spend to fees for hours. That change explains the consolidation, the margin pressure, and the arrival of consultancies as competitors.
The Original Model
Agencies historically earned a commission on the media they purchased on behalf of clients, a standard percentage of the spend.
That arrangement had a clear problem: the agency advising on how much to spend was paid more when the client spent more. Clients noticed.
The industry shifted toward fee based compensation, generally built on staffing plans, hourly rates, and scope of work, sometimes with performance components attached.
Moving from a percentage of media spend to a fee for hours changed the business from one that scaled with client budgets to one that scales with headcount. Those are very different businesses.
The Consequence of Billing Hours
A business earning fees for time has revenue capped by how many people it employs and how much of their time is billable.
Growth requires hiring, which means margin improvement depends on utilisation and on rate rather than on operating leverage. This is the same structure as professional services generally, and it produces similar margins.
| Driver | Effect on agency profit |
|---|---|
| Utilisation rate | Direct, the main lever |
| Billing rate versus salary cost | Direct |
| Scope creep on fixed fees | Erodes margin invisibly |
| Pitch costs | Unbilled and substantial |
Pitch costs deserve attention. Competing for an account involves substantial unpaid creative and strategic work, and the loss rate is high. That cost sits in the base regardless of whether the business is won.
The Holding Company Structure
The large agency groups are holding companies owning many individual agency brands, frequently competing with each other.
The rationale is that conflicts prevent one agency serving competing clients, so multiple brands allow the group to serve both. It also permits acquisition without forcing integration.
The cost is limited operating synergy. Centralised media buying and back office functions generate some, and creative work does not benefit from scale in the way manufacturing does.
What Changed the Economics
Three shifts, all in the same direction.
Media buying became automated. Programmatic buying moved a substantial part of media placement to systems, reducing the human effort agencies were being paid for.
Platforms sell directly. The largest advertising platforms provide their own tools and support, allowing advertisers to run campaigns without an agency intermediary.
Clients brought work in house. Large advertisers built internal teams for media buying and increasingly for content production, retaining agencies for specific creative work rather than for the whole relationship.
The New Competitors
Management consultancies acquired creative and digital agencies and now compete for the same budgets, arguing that marketing, technology, and customer experience are one problem.
They enter with existing senior client relationships, higher billing rates, and an established position advising on strategy. Agencies compete from a position where their historic strength, creative work, is the part clients find hardest to evaluate objectively.
What Remains Defensible
Genuine creative capability is not automatable and is difficult to build internally, since the best people generally prefer variety over a single brand.
Strategic positioning work, brand development, and campaigns requiring original ideas rather than optimisation remain agency territory. The parts that were process, media placement and campaign execution, are the parts that left.
The Bottom Line
Agencies shifted from commissions on media spend to fees for time, which capped scalability and made utilisation the main profit driver. Programmatic buying, platform self service, and client in housing removed the process work, and consultancies arrived competing for what remained. The defensible core is creative judgement, which is the hardest thing to price and the hardest to replicate.