As the pioneer in home-sharing, the company owns the majority of the market share in the industry. It's likely to stay that way since new hosts will go to the platform where they get the most guests, and guests will go to the platform where there are the most places to stay.
Network effects should enable Airbnb to maintain its market leadership in home-sharing, barring some other kind of disruption; the network itself drives Airbnb's growth, helping it save on marketing costs.
Network effects will continue to play a role in the next bull market, and many of these companies that benefit from them should only get bigger as their networks grow.