> Because the market for high end is much more profitable. Builders will build wherever there is profit, not only where profit is only the highest. Otherwise e

> Because the market for high end is much more profitable. Builders will build wherever there is profit, not only where profit is only the highest. Otherwise every watch manufacturer will be building bespoke Phillip Breugets and nobody will build $1 Walmart quartz watches, which obviously isn't the case. > density is still 2x-4x the cost Well of course where density is high, construction is more expensive. That's true in San Francisco and true in Houston. It's just that demand and supply in SF justifies more density than in Houston. > every builder in the nation could continue building high-end-only indefinitely and still never run out of work in our lifetimes Are you saying that demand for high-end housing is effectively infinite? I haven't seen any evidence for it, but if so, we could sure use the tax revenue to build state of the art public transit systems so suburban commutes wouldn't be so terrible...