There are millions being made in the Australian marijuana business but these entrepreneurs and investors aren't risking jail to make their fortunes.They're betting big on the home grown medicinal marijuana industry and riding the "pot stock" boom.But with patients struggling to access cannabis products, Four Corners investigates who is making money out of the marijuana boom.Four Corners charts the rise of this industry which has grown from nowhere in just a few years.https://tv.press.abc.net.au/green-rush-four-corners