William Stern on Instagram: "Craigslist owned local classifieds. And then Facebook took it all. Here’s how: Craigslist never changed. Same gray layout. Same sketchy listings. Zero evolution. Meanwhile, Facebook didn’t build a better website… They just added a feature: Marketplace. Right into your feed. With built-in trust (profiles), messaging, and reach. They didn’t compete on tech. They won on integration. It wasn’t flashy. It was frictionless. And it crushed the category. Lesson: Don’t sleep