So hats off to Red Hat, whose chairman Matthew Szulik is the subject of this week’s Global Business. Red Hat is built on the computer operating system software system Linux, devised 19 years ago by the Finnish developer Linus Torvalds, and then worked on by thousands of collaborators all over the world, to become a plausible free-to-use option instead of the big brands of proprietary software. Red Hat has found a way of making money out of selling free software, as the company puts it. It attaches paid-for support or structuring services to the Linux operating system, bringing confidence to business users of software which they would otherwise be nervous of replying on.