A Gartner buyer survey reports that 63% of customer-service leaders ditched their first AI agent platform within 18 months, citing plateaued resolution rates and opaque pricing escalators — a counter-narrative to the AI-support hype. Forrester benchmarks help explain it: Zendesk AI Agents land near 38% deflection and Intercom Fin around 50-51% resolution, well short of vendor marketing. The signal for builders: the deflection ceiling, not the demo, determines retention, and per-resolution pricing only amplifies the pain when resolution stalls.