One-off products are easy to explain. They’re also easy to replace. Build something useful, market it well, sell it, move on. That model works—until it doesn’t. And when it fails, it usually fails quietly, leaving behind customers who were served but never formed, and teams who shipped but never aligned. Van Doorn Ventures was not built to produce isolated wins. We build ecosystems because ideas don’t survive on usefulness alone—they survive on integration. The Hidden Fragil