WHEN DONALD TRUMP announced last November that Elon Musk would be heading a government-efficiency initiative, many of his fellow magnates were delighted. The idea, wrote Shaun Maguire, a partner at Sequoia Capital, a venture-capital firm, was “one of the greatest things I’ve ever read.” Bill Ackman, a billionaire hedge-fund manager, wrote his own three-step guide to how DOGE, as it became known, could influence government policy. Even Bernie Sanders, a left-wing senator, tweeted hedged support, saying that Mr Musk was “right”, pointing to waste and fraud in the defence budget.