Yes, they are. Zillow particularly stuck their neck out with their model. I was just observing that there are more complex, potentially contradictory, forces in play here beyond a simple investment bubble. Risk, of course, is generally a component of the greatest potential returns.
Risk comes in many forms. In practice, large investment funds and large companies and organization have scale and depth but are rarely nimble enough to avoid ebbs and flows and turns in the market or able to revise their business model on the fly. As the old line goes, the small and quick often end up eating the big and slow.