A May 2026 IDC Market Note on agentic AI confirmed that returns concentrate in domain-level transformation rather than portfolios of isolated use cases. The article argues that the gap now is not technology but the delivery model, introducing "Radical AD" as an agent-native, specification-driven delivery model. In this model, enterprise context data and machine-readable specifications become the source of truth, with AI agents orchestrating and executing across the delivery lifecycle while humans set intent, write specs, direct agents, review outputs and remain accountable for outcomes. The aim is to remove friction that prevents developers from focusing on higher-value engineering work. Radical AD replaces static documents like requirements and user stories with new artifacts that serve as both documentation and execution context, making the spec folder the new source of truth. A live workflow state tracks what is done, in progress and blocked. The Radical AD delivery stack includes human intent: vision, outcomes, priorities.