How can the principles of classical conditioning and instrumental conditioning theory be applied to the development of marketing strategies?

There are variables and constants. It is the same as supply and demand; then there is a shortage of something the price temporarily inflates. My knowing trends, watching the market for highs and low and knowing expected demands (seasonal, regional etc) you can use proven methods to make the most of marketing campaigns. Simply put, a company is not going to waste money advertising Christmas ornaments in June the same way they are not going to push Valentine's Day gifts in October. For the Stock Market, a great example of supply and demand, when weather is colder there is more of a demand for heating oil but only in certain areas.