WPP CFO Says The Trade Desk Operates in a Smaller Slice of the Ad Market

Why It Matters

The statement signals a structural reallocation of media budgets away from open‑web DSPs toward owned‑media and walled‑garden ecosystems, reshaping revenue streams for ad‑tech firms. It also heightens scrutiny of agency supply‑chain transparency and margin extraction practices.

Key Takeaways

• WPP spent ~ $1.1 bn with The Trade Desk in 2023
• Open‑internet programmatic now a declining, long‑tail segment
• Holdco agencies are moving toward direct deals and owned tech
• Walled‑garden platforms projected to capture 58.8% of spend by 2027
• The Trade Desk faces shrinking relevance as DSPs lose auction share

Pulse Analysis

The Trade Desk’s shrinking role reflects a broader industry migration from the open‑web programmatic model to closed‑ecosystem platforms. Agencies like WPP are increasingly prioritizing transparency and direct relationships, citing the "long tail" of the open internet as a diminishing revenue source. This strategic pivot is driven by the faster, cleaner performance metrics offered by streaming services, paid social, and retail sites, which promise tighter alignment with advertisers' revenue goals.

For demand‑side platforms, the shift translates into a loss of auction‑based volume and tighter margins. WPP’s disclosed $1.1 billion spend with The Trade Desk last year pales beside its $1.4 billion investment in Meta, highlighting the accelerating pull toward walled‑garden inventory. Analysts forecast that Alphabet, Meta and Amazon will together command nearly 60% of global ad spend outside China by 2027, further compressing the open‑web’s share and pressuring DSPs to demonstrate unique value beyond price competition.

Looking ahead, hold‑company agencies are likely to deepen their own data‑driven buying capabilities, reducing reliance on third‑party DSPs. This "default‑off" mindset could spur more direct‑deal negotiations, programmatic‑direct growth, and a re‑architected supply chain where margin extraction becomes more transparent—or more contested. The Trade Desk must either innovate beyond its current offering or risk marginalization as advertisers consolidate spend within the dominant walled‑garden platforms.