The advertising agency business model is undergoing its most profound transformation since the shift from print to broadcast.
The Core Thesis:
AI commoditizes production but increases strategic complexity. Agencies that pivot from making ads to orchestrating AI-generated campaigns across fragmented platforms may emerge stronger. Those who sell hours and bodies face existential pressure.
The Great Divergence:
- Google grew 5x while agencies stayed flat
- Platform ratio: 5:1
- Google Ads: $265B
- All 4 major agencies combined: ~$55B
2025: The Year of Agency Reckoning:
- WPP: -62%
- Publicis: -25% (but analyst ratings at highs)
- Omnicom: -18%
- Dentsu: Strategic Review
The Bull Case:
“The industry is being disrupted, but it’s not being disintermediated” — Morningstar
Agencies that orchestrate AI-generated campaigns across fragmented platforms may emerge stronger than before.
This is part of a comprehensive analysis. Read the full analysis on The Business Engineer.









