I would be surprised if the boffins at Zillow didn't consider that in such a market, price discovery is inherently adversarial. Their gain is someone else's los

I would be surprised if the boffins at Zillow didn't consider that in such a market, price discovery is inherently adversarial. Their gain is someone else's loss, and their loss is someone else's gain. In this case the latter scenario played out. Also, with their big data advantage could they not have seen that the entire market was cooling down? Seems they would have the advantage to see market trends before any layperson.