I'd also like to add that Airbnb has become a pretty widely adopted verb. Once a brand becomes a verb, overtaking and unseating that degree of brand recognition becomes a feat that I can't recall has ever been done before.

> Trust, inventory, and demand are not that easy to copy.

Maybe that is true right now, but in the future I doubt it. The last place I rented was on both AirBnB and VRBO, VRBO having a slightly lower price.