Adam smith’s wealth of nation stressed the importance of

Adam Smith founded the science of political economy when he published An Inquiry into the Nature and Causes of the Wealth of Nations in 1776. ... Smith advocated division of labor in the productive process, stressed the importance of individual enterprise and argued the benefits of free trade.

the consumer demand because the members have to be aware if people are going to buy what they want to sell in this case either energy drinks or a car wash.