Amazon's Ad Business Under Threat from AI Shopping Agents

Amazon's massive advertising business is under threat from AI shopping agents that can bypass the company's sponsored listings, even when consumers ultimately order products through Amazon's warehouses.

A new analysis by Andreessen Horowitz argues that AI assistants could become the primary decision-making layer for consumers, potentially disrupting Amazon's lucrative ad business. The distinction matters because Amazon has built a substantial business around controlling the shopping journey. In 2025, the company generated $69 billion in advertising revenue, up 22% from a year earlier.

Amazon is not standing still and is incorporating advertising into its own AI experiences, including Alexa for Shopping, an agentic assistant that offers recommendations, product comparisons, price history, and automated purchases. However, the fight over outside AI agents has become more consequential as Amazon tries to ensure the AI interface remains connected to its advertising engine.

The bigger question for investors is whether AI shopping creates incremental demand or simply reroutes existing demand through a new intermediary. Andreessen Horowitz argues that Amazon's massive fulfillment infrastructure gives it bargaining power, but warns that retaining the order does not necessarily mean retaining the same profit pool.