The primary externality Airbnb generated was RISK
This exploded into public awareness when a host found her apartment absolutely destroyed by a guest
Which, you know, of course: a system like that is bound to fail spectacularly on occasion.
But what shocked me was how unprepared Airbnb was to make their host whole again. They were dodging accountability and only public shame, orchestrated by the host’s desperate PR campaign, could make the difference