With the U.S. hotel industry performing well, it is losing some business from the sharing economy, but there isn't a lot of hurt yet. That could come later.
Trivago's new shared-room search reflects the born-again trendiness of hostels -- which are no longer called youth hostels -- and apartment shares. Booking.com and Kayak already have it, and others will add it.
TripAdvisor isn't exactly a wild-eyed daredevil, but the fastest growing category on its Flipkey accommodation site is apartment rentals, a category that flirts with illegality in large, urban markets like New York.
The claim that Airbnb has taken some demand away from major hotel groups is indisputable, but the significance and depth of its long-term impact on the industry is yet to be determined.