I might have misread your post somewhat. My point was that just because the AirBnB happen to have the highest willingness-to-pay (mostly due to budget set const

I might have misread your post somewhat. My point was that just because the AirBnB happen to have the highest willingness-to-pay (mostly due to budget set constriants, not their preferences) doesn't mean that they're the most deserving from a social or moral perspective.