Is Open Source Dead?

LLMs have made writing code dramatically cheaper while using open source libraries has become more expensive due to ongoing maintenance, audits, and dependency obligations. The old 'don't reinvent the wheel' advice no longer universally applies. The new guidance: use libraries for security-sensitive or genuinely complex domains with mature, well-supported projects; write your own LLM-assisted code when you need only a small slice of a large library, the logic is simple to specify, and you can test it exhaustively. If you can't fully test it, you haven't replaced the community — you've just fired them.