There will be a rebranding in the next ten years. Airbnb will get a slightly more blocky or rounded version of the same logo and ads everywhere announcing how "Airbnb is now Air".
I can't tell who owns air.com, but the website it hosts is a tiny landing page from someone who would obviously sell.
The rebranding will be met by a slew of astonished articles asking "they spent how much?" and almost as many apparently-thoughtful midwit counterpoints saying no, it looks obvious in hindsight, but it took real marketing genius to conceive of this in advance.
I think Airbnb will have a branding issue. By transitioning from rentals to offering a wide range of services, they might dilute their brand before people have the chance to fully embrace and experience the new offerings.
Perhaps they should reinvent themselves as a platform that manages travel and stays, emphasizing that their “airbnb certified experience” includes access to specific facilities and guarantees. This way, users can choose from other service providers in their marketplace with their own standards. That way, expanding to more services over time would seem like an organic expansion.
Essentially, Airbnb could transition from managing services to a marketplace model that also hosts managed services and other providers. However, by maintaining a focus on “stays” or “travels” and slowly adding more ancillary services would prevent dilution before their metamorphosis is complete.