I thought a social networking site for college kids would never make appreciable revenue through advertising. Runner up: women would never pay money to stay in someone else's apartment. Runner up: mobile phones would take a generation to achieve widespread deployment.https://twitter.com/andrewchen/status/1140062940319502336 …
The biggest thing I missed was that AirBNB would effectively be facilitating an asset-light hotel chain as the main business with a sideline in renting out rooms, etc.