One of the most fascinating stories in global business over the past two years has been the competition between taxi services. Uber first actually created a new market, and then began to lose it to competitors in other countries - Didi Chuxing in China, Grab in Southeast Asia, Yandex in Russia. In almost all of these countries (with the possible exception of Russia), the same person invested in Uber's competitors - Japanese billionaire Masayoshi Son.