Final answer:
Customer-switching costs exist when customers make investments in order to use a firm's particular products or services.
Step-by-step explanation:
In business, the costs that exist when customers make investments in order to use a firm's particular products or services are called customer-switching costs. These costs can include the time and effort it takes for customers to learn how to use a new product, as well as any financial investments they may need to make, such as purchasing new equipment or software.