Fred Reichheld argues that customer loyalty is key to business growth and profitability. His research found that most companies lose half their customers every 5 years, employees every 4 years, and investors within a year. This disloyalty stunts company growth by 25-50%. Reichheld's loyalty-based management strategy focuses on building superior customer value, finding the right customers and employees, and earning their loyalty through quality products and service. When implemented successfully, this approach leads to increased revenues and market share, sustainable growth, and a cost advantage through higher productivity.