Airbnb's valuation seems totally irrational to me, given the nature of their business. Still, I would think any business would like to double their valuation in

Airbnb's valuation seems totally irrational to me, given the nature of their business. Still, I would think any business would like to double their valuation in a year. Mariott should convert all of their hotels into apartments, fire all of their staff, rent the apartments, and then have those people rent the apartments to other people via mAIRiottBNB.com. Boom, instant market cap doubling.