Discount travel sites tend to do well during times when vacation rentals and hotels aren't selling well on more traditional travel sites. Expedia/Vrbo's deal with Whimstay may reflect those market dynamics.
Now you know why online travel companies do so much A/B testing. The whole world seems to depend on whether a price disclosure is in a bold or light font. Fee transparency is being put to its own test in California.
There will clearly be more pruning to come as Expedia Group expands its One Key loyalty program to Europe, and takes hard looks at its brands and operations in countries around the world.