AirBNB, by contrast, is creating new supply, and that supply is in turn only being sold to AirBNB users. As an AirBNB host, it would be very good for me if I was constantly full of people making one day stays and then disappearing forever.
Similarly, if the businesses offering groupons were still profiting from them at the margins even without assumptions of repeat business, then these "locusts" wouldn't be taking value away either.