50 Websites Now Control What AI Recommends to Shoppers. Most Ecommerce Stores Are Not on the List.
The 5WPR AI Citation Source Index 2026, the first consolidated ranking of websites most cited by AI engines, reveals a concentration problem: the top 15 domains absorb 68% of all AI answer citations, and Reddit alone accounts for roughly 40% of all AI-sourced content across ChatGPT, Claude, Perplexity, and Gemini. For ecommerce stores, this means your products are being recommended, compared, and ranked based on information that mostly comes from a handful of platforms you probably have zero control over. ...