Poppi cofounders Allison and Stephen Ellsworth. Vivien Killilea/Getty Images for Poppi Poppi's cofounders poured everything into their soda business then sold it for $2 billion last year. Allison and Stephen Ellsworth told us the risks they took and sacrifices they made in an interview. They spoke about how wealth has changed their lives and how they're keeping their children grounded. Allison and Stephen Ellsworth built Poppi from nothing and sold it to PepsiCo for just under $2 billion last