Their minimal financial disclosures make it difficult to determine whether the valuation figures would be supported by the broader market. SoftBank has been angling to make an investment in Uber that would value that company at far less, for example. Still, the latest funding round for Didi Chuxing shows how capital continues to rush into the global ride-hailing market, where deep-pocketed investors are jockeying to place bets on companies that they believe will continue to transform the way people get around.