Last Sunday evening, Australia’s third-richest person, Mike Cannon-Brookes, sent out a mischievous Tweet: “Might be an afternoon espresso kind of day” ... as recognition he knew just how much of the proverbial would be hitting the fan about his latest big plan – to take over AGL Energy and accelerate the closure of its coal-fired power stations.

At the time it was a big surprise; an audacious move alongside Canadian asset manager Brookfield that nobody had seen coming, but with hindsight it was totally in character.