Richard White is a self-made Australian success story. He grew up in Sydney’s working-class south, went to public schools, and built a global software company now worth $44 billion – that’s bigger than Woolworths and Coles, and about the same size as Telstra.

He’s also an unconventional billionaire. He played in a ’70s glam-rock band, fixed guitars for AC/DC, and still lives with his mum and two mates – in the place where he was born.