<div><b>Amazon's decision to launch a storefront on Alibaba reveals the lack of competition in China's internet sector among the handful of companies that dominate it. Breakingviews editors discuss.</b></div> <div> </div> <div>(Reuters)</div> <div> </div> <!-- inPage/Inpage/ --> <script async src="//code.ainsyndication.com/v2/js/slot.js?10022025"></script> <ins class="ainsyndication" style="display:block; width: 100%;" data-ad-slot="2395"></ins> <!-- inPage/Inpage/ --> <div><b>ANN.Az</b></div> <iframe src="http://www.reuters.com/assets/iframe/yovideo?videoId=363434174" height="288" width="460"></iframe>