“Consider a forecast Steve Ballmer made in 2007, when he was CEO of Microsoft: “There’s no chance that the iPhone is going to get any significant market share. No chance.” Ballmer’s forecast is infamous. Google “Ballmer” and “worst tech predictions”—or “Bing” it, as Ballmer would prefer—and you will see it enshrined in the forecasting hall of shame, along with such classics as the president of Digital Equipment Corporation declaring in 1977 that “there is no reason anyone would want a computer in their home.” And that seems fitting because Ballmer’s forecast looks spectacularly wrong. As the author of “The Ten Worst Tech Predictions of All Time” noted in 2013, “the iPhone commands 42% of US smartphone market share and 13.1% worldwide.”1 That’s pretty “significant.” As another journalist wrote, when Ballmer announced his departure from Microsoft in 2013, “The iPhone alone now generates more revenue than all of Microsoft.”2”