This is one reason why Alibaba is listing in the US instead of HK http://www.bloomberg.com/news/2014-03-16/alibaba-to-start-pr...

'Hong Kong’s bourse doesn’t allow share classes with different voting rights, as the U.S. does. Such arrangements helped Zuckerberg and Google co-founders Larry Page and Sergey Brin keep control of their companies after they went public."