>You get a few thousand people that want to build a house but can't afford land, This exists in a way. "Off the plan" apartment buildings are sold before the b

>You get a few thousand people that want to build a house but can't afford land, This exists in a way. "Off the plan" apartment buildings are sold before the building is actually built. If enough people buy it, the construction goes ahead. If not, you get your money back.