The online car service Uber adapted existing technologies to transform a long-sheltered industry that too often provided lousy and expensive service. Airbnb’s “supply” of rooms far exceeds anything to which traditional hotels could reasonably aspire.
在供给端，科技进步正在推翻长期存在的进入壁垒。在线汽车服务商Uber利用现有科技撼动了一个长期存在壁垒、常常提供价不廉物不美服务的行业。Airbnb的房间“供给”远远超过了传统饭店能够想象的规模。