People don't buy these for curb appeal. They buy them because of interior features. Also, the exterior appeal only matters in relation to the architecture around it. My wife knows the difference between good architecture and bad, we just haven't seen a new neighborhood that resembles the old rich parts of town. So as long as we keep buying vaulted ceilings, open lofts, big kitchens, and game rooms ¯\_(ツ)_/¯
Source: I own one and I did mortgages for a while. Was product manager for a company that sold some tech to home builders.
This seems incorrect. If it were true, then there would be no reason for the exteriors to be so god-awful. If all you care about is a lot of good interior space, then why pay for misplaced Roman columns? In fact, some McMansions can be identified by their poor handling of interior space, mostly due to having too many disjoint or poorly connected masses.
Source: I own one and I did mortgages for a while. Was product manager for a company that sold some tech to home builders.