AI is collapsing the traditional boundaries between product, design, and engineering. What once required an entire team can now be built by a single person who knows how to think, build, and leverage AI. This talk makes the case that product people are uniquely positioned to make this leap—because they already hold the hardest part: taste and judgment. Drawing on frameworks like the Taste × Execution × AI-Leverage model and Vibe Coding, plus real teardowns of Spotify AI DJ, Microsoft Copilot, it lays out a concrete path to becoming a Full-Stack Builder—from spotting AI-native opportunities to shipping products solo. The future belongs to those who can build.