In 24 Hours, Musk Reignited His Reputation for Risk

In the span of 24 hours this past week, Elon Musk made three very big bets with three very different companies, together showing his penchant to plow ahead despite sizable risks.

Between Wednesday and Thursday evenings, he stripped celebrities, journalists and other high-profile users of their free, legacy verification on Twitter, risking a VIP revolt on the social-media platform. He promised that the electric-car maker Tesla Inc. would chase sales volume at the expense of profitability. And he launched SpaceX’s first of its kind giant space rocket, which exploded on the way to the heavens.