Final answer:
The discussion revolves around tying sales, a controversial sales tactic requiring customers to buy a second, potentially unwanted product with their initial purchase. It also touches on the historical shift to department stores, which altered consumer habits and retail experiences significantly.
Step-by-step explanation:
The subject in question pertains to tying sales, a business practice where a customer is permitted to buy one product only on the condition that they also purchase another item. These kinds of sales are considered controversial because they may force consumers to buy an additional product they may not need or desire, potentially lacking any real benefit to them. For example, if a customer wishes to buy a popular DVD but is mandated to also purchase a specific portable TV model, this practice restricts consumer choice and does not allow customers to select from a wide market range, thus conflicting with the notion of free market principles.
Another aspect of the business that is highlighted is the historic shift in consumerism with the rise of department stores. The evolution from small, family-run shops to large department stores signified a change towards modern shopping habits, including fixed pricing and the spread of advertising, alongside the availability of a broad array of goods.