The traditional Google Ads agency model was built for an era of manual bid management and complex campaign architecture. In 2026, Smart Bidding, Performance Max, and AI-native execution engines have absorbed the bulk of what account managers used to do. This piece breaks down why percentage-of-spend pricing misaligns incentives at scale, why human throughput cannot keep pace with modern account data, and why the best agencies are evolving to engine-powered execution rather than hiring more headcount. Whether you run an agency, manage Google Ads in-house, or want the function fully handled, the shift from labor-based overhead to engine-powered infrastructure is already underway.
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