You should also be a chef because people will never stop eating.
This is a train that went away a long time ago. AirBNB is slowing down and becoming the yellow pages/TripAdvisor of the internet (that is very clear in terms of the commodification of the review process).
It doesn’t mean they will fail, however you can’t just state they will grow forever.
> You should also be a chef because people will never stop eating.
Not sure how this has anything to do with the network effect point I brought up. I definitely never stated they will "grow forever", I said the network effects of their platform are a sort of moat.
Any marketplace will benefit from network effects. The devil is in the extent to which you can take advantage of these. And you made no points about that.