Final answer:
Customer satisfaction is related to customers lost due to unmet demand, affecting market share and increasing customer acquisition costs.
Step-by-step explanation:
The phrase 'customers lost due to unmet demand in the previous quarter' refers to the concept of customer satisfaction. This concept is crucial in business as it relates to how well a company's goods or services meet or surpass customer expectations. A decline in customer satisfaction can often lead to customers turning to competitors, which can in turn affect a company's market share and increase its customer acquisition cost as it tries to replace lost customers with new ones. It's important to monitor customer satisfaction to maintain a healthy business and prevent the loss of customers due to unmet demand or other dissatisfaction.