he digital economy has transformed the way we communicate with each other; the way we consume information, products, and services; the way we entertain ourselves. It’s revolutionized seemingly non-digital industries—think of how different financial services, for instance, are today from what they were two decades ago—and investors expect it to soon transform others, which is why Tesla Motors is worth more than General Motors despite making a tiny fraction as many cars as GM makes and earning a tiny fraction of the revenue.