After weeks of research and hundreds of papers, the picture is clear: quantum computing will deliver genuine competitive advantages for pharma, chemicals, batteries, advanced materials, and condensed-matter physics. For finance, logistics, and machine learning, the evidence is structurally weak. This capstone article synthesizes the full Quantum Utility Map series into a single strategic thesis. The post The Narrow Advantage: Why Quantum Computing Will Transform Five Industries and Disappoint Twenty appeared first on PostQuantum - Quantum Computing, Quantum Security, PQC .