On the other hand, Uber's network effect and synergies are mostly localized to cities. If I move to a new city and there is a competitor with lower prices, chances are I'll install their app eventually, even if it takes me a few weeks.
In San Francisco for example, AirBnB collects and remits the local hotel tax on behalf of hosts, making that a non-issue for hosts. But when I used AirBnB in Italy I had to meet the host and they needed to charge me the tax, print a receipt, and had me sign something...all which I imagine was because at the time or in that locale AirBnB had not set up that convenience for hosts yet. And in SF, they only do this if AirBnB is the sole platform you use--if you use multiple then you'd have to collect/remit taxes yourself I believe. Probably not an issue for someone who rents out multiple units and treats AirBnB as their main job, but for the little guy that just wants to make a few extra bucks from an extra couch, room, etc. here and there AirBnB navigating the tax stuff is huge.
From what I can tell, AirBnB has a brand and a web application. Technically, I can't imagine the latter is more complicated than the average e-commerce site delivered at scale. I am having trouble understanding how big data can create an advantage (maybe to help owners price their rentals?). If a competitor pops up, there's no reason owners can't list on multiple sites without facing any penalties.
AirBnB is not a company I'd invest in for the long term, while I would invest in Uber/Lyft. So, what am I missing?