39% of CMOs are cutting agency budgets this year. Agencies lost 8% of their workforce in 2025, and Forrester forecasts a further 15% cut in 2026. The consolidation sweeping the holding companies is not a coincidence. It is survival.
For decades, the standard playbook for a growing brand was simple: hire an agency. You paid a monthly retainer, and in return, the agency managed your media spend, wrote your copy, designed your banners, and optimized your search presence. This model was built on production volume. Today, that entire production model is being disrupted. The execution work that agencies traditionally charged premium rates for can now be handled in-house, faster and more effectively, by a lean team leveraging AI.
The economics of in-housing
Over the last three years of daily AI integration, I have focused on building marketing systems that run entirely in-house. Across our current portfolio of five fitness and lifestyle brands, we do not pay agency retainers. The strategy, the content creation, the paid campaigns, and the reporting all run through a small, focused in-house team.
This is only possible because AI tools have compressed the production cycle. For example, drafting ad variations, writing search copy, or generating template layouts used to require a chain of briefs, copywriters, and designers. Now, we use Claude and ChatGPT as real-time brainstorming partners to draft and refine campaign creative in hours instead of weeks. When the strategy, creative, and implementation are kept close to the product, there is zero translation error, and the speed of execution becomes a major competitive advantage.
What agencies still own
This shift does not mean agencies are obsolete. The ones that will survive are the ones selling something that AI cannot replicate: deep strategic counsel built on decades of market experience, creative intuition that understands the cultural texture of a community, and the human relationships required to align stakeholders. They are moving away from billing hourly for execution and toward selling high-value judgment.
If an agency's value proposition is built on the volume of content they produce or the number of posts they publish, they are competing with a commodity. Execution is cheap; judgment is not. The agencies that thrive will be those that partner with brands on business strategy, not asset production.
Auditing the marketing ledger
For business leaders, the current landscape offers an opportunity to audit where marketing dollars are actually going. If you are paying monthly agency fees for basic search management, social media posting, or newsletter formatting, that budget is underperforming.
Reallocating those retainers in-house allows you to shift resources directly into paid media or owned-channel retention campaigns where the capital actually compounds. By building the capability to execute in-house with a lean team and AI tools, you gain both agility and accountability. The goal is simple: keep the execution close to home, and invest your budget where it returns the highest yield.