“Zillow was found to be price fixing”, you say this as if there was some legal investigation. There wasnt. There were a bunch of salty realtors cherry picking data and confusing correlation for causation. The fact of the matter is, Zillow overpaid and underpaid for houses, and eventually lost millions of dollars during COVID era market swings, recognized the risk of the business and shut it down after only 3 years.
The ibuyer business was intended to take on all of the burden of buying and selling houses to make it easier for consumers to move.