Public lands already have value as nature preserves and tourist attractions. At the same time, the economic needs of ordinary human beings — which often require land development — shouldn't be ignored.
Having failed to show that capitalism impoverishes people, socialists have invented a new victim of material prosperity: the environment. But this latest turn is the most disturbing of all in its knee-jerk hatred for human beings and human life.
Supply, demand, and prices affect human usage of natural resources in such a way that the most scarce and valued resources are economized and preserved. The practical effect is that valuable resources never really run out.