TOKYO/NEW YORK -- Two years after launching the mammoth Vision Fund, SoftBank Group chief Masayoshi Son is facing his first big test, as he doubles down on his investment in WeWork despite an avalanche of problems the coworking startup has faced.
"I have experienced countless failures and have retreated many times," Son has said, looking back on his four decades in business. "You need to have the willpower to pull out of a losing battle before you're seriously hurt."
