Take context from the input text and decide on the accurate relationship between 'FanDuel' and 'daily fantasy sports' from the options provided.
Options: founded by, stock exchange, developer, industry

“She called it gambling,” Lee said, and he was hoping I’d make it clear that the daily fantasy sports leagues are skill games — no different than playing video games, in his mind — and not some form of wagering, which is why they have taken off to where leading players like DraftKings and FanDuel are now businesses with billion-dollar valuations.
industry