It's easy to forget how confident the pitch once was: buy homes directly from sellers using an algorithmic price, skip the showings and negotiation, resell at a modest markup. Zillow shut its iBuying arm down in 2021 after a pricing miss that cost it billions in write-downs. Others scaled back rather than shut down entirely.
Pricing was never the bottleneck
The algorithms were, for the most part, fine. What broke the model was the operating cost of actually holding and reselling thousands of physical homes — carrying costs, renovation overruns, and a housing market that doesn't move in a straight line. A pricing model can be retrained in a day. A national renovation and resale operation can't pivot nearly as fast.
What's left standing
The surviving players have mostly repositioned around asset-light services — cash offers as a lead-generation product, or software sold to agents — rather than balance-sheet-heavy home flipping. That's a smaller, less exciting business than the original pitch, but it's the one that doesn't require a housing market that always goes up.