A deliberately narrow first product chosen because it cracks open a customer or market you could never win head-on, then lets you expand from inside.
When Figma launched its free design tool in 2016, it competed only on collaboration, not feature parity with Sketch or Adobe. That single wedge, real-time multiplayer in a browser, pulled in designers first, then product managers, then engineers, and eventually FigJam, Dev Mode, and Slides. Adobe agreed to buy it for $20B in 2022 specifically because the wedge had widened so far.