Construction constitutes a huge part of economic activity. While the public is going to have to be skeptical of any new construction technique until the buildings have some track record(imagine what people thought about the first skyscrapers), the cost and environmental footprint of new buildings is one of those "Big Problems" that is obviously worthwhile to solve.
Prefabbed homes already have a track record. They collectively sucked. Look at any disaster film following a hurricane or tornado and all the flattened houses were usually prefabbed trailer homes. The builders learned that lesson and started on something simpler, prefabbed freeways, bridges and conduits. But the damage has already been done. When you say prefab people think Hurricane Andrew and the acres of flattened houses it left behind. Maybe in another 10 years they'll be more common. For now, people aren't signing 20+ year mortgages so some builder can work out the kinks in their technique.
Probably so, but during a storm or tornado warning it's the trailer parks that get evacuated. Cheap wooden homes are left to the owners to figure out if they are going to survive or not.
