Why Stablecoins Won’t Kill Cards Ft. a16z Partner Noah Levine

Agentic commerce represents a fundamental shift toward autonomous, machine-to-machine transactions that bypass human intervention, potentially scaling transaction volumes by orders of magnitude. While traditional card networks maintain dominance through established trust and global acceptance, they face limitations in supporting the high-frequency, micro-transaction nature of AI-driven workflows. Stablecoins emerge as the critical infrastructure for this new economy, offering programmable, real-time settlement that aligns with the needs of "headless merchants" and sovereign agents. As AI agents increasingly manage complex tasks—from sourcing compute resources to executing business operations—the demand for efficient, low-friction payment rails will grow. This transition toward composable commerce, where agents autonomously handle financial decision-making and resource allocation, signals a move away from legacy banking models toward a faster, streaming-based financial ecosystem that prioritizes speed and scalability over traditional, human-centric settlement cycles.