In November 2016, Dan Osborne voted "no" to Proposition 64 in California, the measure to legalize marijuana for recreational use.

He smoked pot in high school, but that was a long time ago, and his perspectives have changed. "I'm a dad and a grandpa. So we've got a responsibility," says Osborne to Marcus Lemonis in CNBC's special episode of "The Profit," "Marijuana Millionaires," airing Aug. 10.