Testing limits

Masayoshi Son made his fortune by doing risky things the Japanese business establishment disapproved of. He hasn’t stopped. The latest move is to borrow heavily against his holdings in Softbank, the company he founded and chairs. That’s not only risky - it could have nasty consequences for other Softbank shareholders. True, it’s relatively easy to be classified as a nonconformist in conformist Japan. Son stands out there for being a successful Korean businessman, being educated in the US, chang...