The schadenfreude is real for me seeing this. A company like Zillow getting into flipping seems questionable to me. The customers are no longer aligned with the company on goals with something like this. It's like when the realtor offers to buy your house... they obviously feel like they can make more than you, when they're supposed to represent you!
Edit 2: What I'm surprised at as well is how short-term their forecasting seemed to be. They just started doing this and the market cooled a tiny bit (also, what? where?) and they're selling everything off? Were they incapable of sustaining anything but massive constant growth?