但它们的演变绝不是直来直去的，要想繁荣，这类服务中有许多需要小心监管 — — 欧洲针对Uber的示威和不利裁决就是明证。
But their evolution is far from straightforward, and many such services will require careful regulation if they are to flourish – as protests and court rulings in Europe against Uber demonstrate.