Dak Patel is one of thousands of people who’ve been enthralled by the charm, charisma and enthusiasm of British billionaire Sanjeev Gupta.

For the past 18 months, he’s been the chief executive of Infrabuild, the $4 billion Australian structural steel business regarded as a jewel in the crown of the sprawling global empire with a workforce of 35,000 built up by Gupta under the GFG Alliance banner.