SoftBank CEO Masayoshi Son has pledged to invest $100 billion in start-ups through the Vision Fund. : With some tech companies struggling post-IPO, Silicon Valley could start looking elsewhere for cash — namely, to Japanese billionaire Masayoshi Son, technology investor Jason Calacanis told CNBC's "Squawk Alley" on Friday. "There's this other optionality, the Masa-IPO," Calacanis said. "In Silicon Valley now, everybody's talking about, 'Why IPO when you can just Masa-PO?' Masa's going to save all these companies and put the money in and we're good. So I feel great about it."