When options are not available, people either want the thing or they don't. No skill is required to make a sale, and often, the item is not even made until the order is placed and the compensation has been agreed to. These ways were once universal. They still exist in some parts of the globe. If you have a monopoly, salesmanship is not necessary. The question then becomes, what happens when you don't have a monopoly? Is salesmanship then required? The answer is that whenever someone has more than one choice, then persuasion and salesmanship automatically becomes necessary or the people providing those choices will fail and cease operation.