This process can function in a market for private goods for food, clothing, housing, automobiles, and millions of other marketable private goods because the benefits derived there from to the particular consumer who pays for them. Thus, benefits are internalized and consumption is rival. A hamburger eaten by A cannot be eaten by B. At the same time, the nature of the goods is such that exclusion is readily feasible. The goods are handed over when the price is paid, but not before. But market failure occurs and budgetary provision is needed if consumption is nonrival and exclusion is inappropriate or inapplicable.