This is most certainly what they're not doing. Airbnb has promoted the idea that you can rent out your primary residence to make money. A quote from http://ww

This is most certainly what they're not doing. Airbnb has promoted the idea that you can rent out your primary residence to make money. A quote from http://www.airbnb.com/rooms/new http://www.airbnb.com/rooms/new - "Airbnb lets you make money renting out your place. Your apartment will pay for itself!" That is the antithesis of a 'unused low marginal cost asset'.