How have courts dealt with cases involving administration of the public domain?

As a last resort the defendant presses on us cases involving administration of the public domain;³⁵ but the problems presented by them are far removed from those of a government corporation organized on a commercial model, charging consumers for the type of services ordinarily supplied by private enterprise. Moreover, the public domain cases have no factor analogous to the treaty the Hay-Pauncefote Treaty, supra which here binds the government to conduct its venture in a fashion that will provide fair and equitable tolls for users of all lands. Compare Perkins v. Lukens Steel Co., 310 U.S. 113, 128, 129, 60 S.Ct. 869, 84 L.Ed. 1108, which the defendant cites.