What is the key benefit of customer loyalty according to the service profit chain?

The key benefit of customer loyalty, as articulated in the service profit chain, is that it leads to higher profit and growth. This relationship highlights the importance of retaining customers, as loyal customers tend to make repeat purchases and may also recommend the service to others, thereby driving additional revenue. When customers are satisfied and continue to engage with a business, they contribute to a stable and predictable income stream, allowing the organization to plan for future growth more effectively. This cycle of customer satisfaction leading to loyalty, and then to financial success, is a fundamental principle of the service profit chain, emphasizing how valuable loyal customers are to the overall success of a business.