3 Stocks Whose Competitive Walls Tower Over Nvidia's

While Nvidia has built a strong competitive moat in AI chips, three healthcare stocks—Moderna, Intuitive Surgical, and Vertex Pharmaceuticals—possess even more formidable competitive advantages. Moderna leverages its mRNA expertise across vaccines and oncology; Intuitive Surgical dominates robotic surgery with high switching costs; and Vertex leads in cystic fibrosis treatment with a patent-protected pipeline extending to the late 2030s.