I agree that the price of land is a tough nut to crack, but the cost of actually building stuff on that land could be reasonably expected to fall at a rate similar to the rate of other manufacturing. That it hasn't is, I think, largely because we build buildings right where they end up, so we can't take advantage of the efficiencies afforded by assembly lines and outsourced labor. This mostly seems like a good thing to me. The notable exception is trailer homes, for which the price of the land really does dominate the cost.