Witness how Facebook overtook MySpace in social networks, or how Apple upended the market for smartphones – or how new services and markets are constantly being invented. Twitter has displaced no one; rather, it supplements and competes with all other modes of communication.
事实上，这些措施可能造成新的进入壁垒，巩固市场领导者地位，破坏创新。互联网市场以变化剧烈为特征。Facebook在社交领域取代MySpace以及苹果逆袭智能手机市场就是明证，层出不穷的新服务和市场亦然。Twitter没有取代任何东西，而是起到了补充作用，并与其他通信方式竞争。