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Marketing Agencies

Any agency can buy the tools. Buying them won’t set yours apart.

Per Upshift’s AI Exposure Index, 7 of 16 marketing service lines are work a client can now get without your agency. Edelman and 5W already sell clients a service with AI built in: how they show up in ChatGPT and Perplexity.

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83%

of marketing leaders would cut agency spending if they could fully automate content.

Typeface, via eMarketer 2025

29.6%

of US ad spend now runs through the Big Six holding companies, down from 44.6% in 2019.

Advertiser Perceptions

85%

of agencies now prefer retainer work over projects, and engagements are running longer.

SparkToro, 2025

Questions

Not the ones that change what they sell. 60% of marketing leaders spent less on agencies in 2025 as a direct result of AI (Typeface via eMarketer), yet 52% say they want better ideas, not lower fees (Agency Edge 2026). Clients aren’t dropping agencies; they’re refusing to pay agency rates for production AI now does cheaply. Growth is going to agencies that sell strategy and outcomes instead of billable hours.

60% of marketing leaders spent less on agencies in 2025 because of AI (Typeface Signal Report, 2025). S4 Capital, parent of Monks, reported H1 2025 net revenue down 12.7%, with headcount cut 8.9%. Executive director Wes ter Haar told Digiday (September 2025): “AI is eating the agency business.” 83% would cut further if they could automate content creation in-house.

AI-visibility audits and brand-monitoring subscriptions covering how clients appear in ChatGPT and Perplexity. Edelman shipped GEOsight; 5W ships its own version. AI content-governance retainers where the agency owns oversight while the client generates the volume.

The deliverable model is breaking. One in four North American agencies has shifted to fixed-fee pricing (Forrester / Dentsu, Adweek May 2026), and 85% of agencies now prefer retainer work, up from 81% a year earlier (SparkToro). Search Engine Land reported in April 2026 that agencies are being squeezed from both sides: they automated delivery, but their clients adopted the same tools.

Ad spending grew 8.6% the year holding company revenues fell 1.2% (eMarketer). The deliverable layer is moving in-house. The agencies still winning are the ones selling visibility and governance, not asset volume.

15% of agency jobs are forecast to be eliminated in 2026 (Forrester). Using AI internally doesn’t change what an agency sells, and the efficiency advantage evaporated when clients adopted the same tools.

Agencies that reduced their services grew 13% at 30% net margins in 2025, against a 7.5%-growth, 13%-margin field (Promethean Research, 119 agencies). The math works when the contract is sold differently. It doesn’t when AI is bolted onto deliverable-based billing. The savings get passed through to clients as discounts.