Billion-dollar debts control the future of tech industry

And they have changed dramatically over the last three decades. First it was the military. Today, another chapter begins: massive funds, with billions to spend and often linked to governments, are technology's new masters. The undisputed leader is Japan's SoftBank, which counts Uber, WeWork, Alibaba and Nvidia among its investments. Its companies make awe-inspiring robot dogs (Boston Dynamics) and offer dog walking as a service (Wag) for real canines.