Built to Forget: The Importance of Consent Infrastructure for the Post-Keyboard Era

This paper identifies a fundamental category migration at the intersection of infrastructure economics and human sensory preference. We argue that Big Tech hyperscalers are transitioning into regulated energy and compute utilities, evidenced by a projected $875B AI CapEx spend in 2026 (3% of US GDP). This shift creates a structural necessity for "Consent-Architectural" frameworks. Drawing on McLuhanite media ecology, we explore the "Acoustic Return" as the primary interface for a post-keyboard generation and identify longitudinal voice biomarkers as the critical diagnostic layer for the 2026 healthcare landscape. Key Frameworks: Longitudinal vs. Episodic Data Utility, Agent-Native Metadata Taxonomy, Sovereign Identity Systems.