Billy Kraft’s college startup ran for 18 months, had thousands of users, and made all of $17 from Google AdSense. As CEO and co-founder of Path, Billy flipped the order: get customer commitments first, then build the product. His first customer was Austin’s iconic Waterloo Records shop. Path’s team scanned CDs by hand, worked the register, and asked every store employee: “Where are you stuck?” @billykraft, @pathsystems, @jason