Should Jack Dorsey combine Twitter and Square?

FOR A MAN of creative genius, monkish calm and austere wabi sabi aesthetic, Jack Dorsey is remarkably good at making investors mad. Scott Galloway, a podcaster and business-school professor, has raged on air to have him sacked from Twitter, which Mr Dorsey co-founded and runs, and in which Mr Galloway owns shares. Wall Street showed similar apoplexy on March 4th when Square, his other co-creation, offered almost $300m to buy a weak music-streaming service founded by Jay-Z, the rapper who is one of Mr Dorsey’s buddies. In one day Square’s value plunged by over $7bn. As Vox, an online news site, put it: “WTF?”