William Baumol (a fantastic environmental economist) proposed a theory of firm behavior about sales maximization, as opposed to profit maximization. To quote, "The sales maximization goal says that managers of firms seek to maximize their sales revenue subject to the constraint of earning a satisfactory profits." Suppose that, as economists, our theory asserts that a firm's maximization problem is to maximize revenues, subject to earning positive profit. Are there any firms in the real world that this behavior explains better? Why does it apply to those firms? Are there any industries where it does not apply? What would determine if it should be followed as a goal or not