This ban isn't about 'fairness' or bot protection; it's about protecting the Impression Funnel.
Marketplaces like eBay are designed to monetize 'Wandering Attention'—sponsored listings, 'customers also bought', and sidebar ads.
An AI Agent represents 'Laser Focused Attention'. It executes a transaction with zero wandering. It effectively turns the marketplace into a commoditized backend database / dumb pipe.
From a Growth/Unit Economics perspective, an AI Agent is a nightmare customer. It has zero probability of impulse buying and generates zero ad revenue. They are banning them to save their business model, not their inventory.
Marketplaces like eBay are designed to monetize 'Wandering Attention'—sponsored listings, 'customers also bought', and sidebar ads.
An AI Agent represents 'Laser Focused Attention'. It executes a transaction with zero wandering. It effectively turns the marketplace into a commoditized backend database / dumb pipe.
From a Growth/Unit Economics perspective, an AI Agent is a nightmare customer. It has zero probability of impulse buying and generates zero ad revenue. They are banning them to save their business model, not their inventory.