This is a common misconception on HN. People with technical backgrounds love structural explanations for things. You see a similar phenomenon in the number of people who believe that the shape of an airfoil is what keeps a plane up. But in fact the main thing driving Airbnb's growth is not price, but that guests are looking for authentic experiences. Price helps, just as lift generated by airfoil shapes does, but it's not what has made Airbnb big.