The Dependency Risk
Average Node.js app: 200-400 transitive dependencies. Average Python app: 100-200. Each dependency is maintained by someone else, with their own security practices.
Economics: automated dependency scanning ($5-20K/year) prevents vulnerabilities that could cost $100K-4.45M. The ROI is nearly infinite. If you're not running Snyk, Dependabot, or equivalent — start today.