Instead of stomping his foot in protest, he found a like-minded teen on Facebook, Cameron Zoub, to help him build a bot that would buy limited-edition sneakers for people before they sell out. "We basically spent the next eight years building a ton of different products," Schwartz tells Fortune. "We built marketplaces, we built consumer apps, we built games, we built social networks, we built SAS companies, people agencies, and we did pretty well."