McGahan’s analysis examines the evolution of industries over time by identifying four major explanatory trajectories. First, technological change plays a major role by disrupting industrial practices through new inventions and technologies. For example, the advent of smartphones revolutionized our communication and internet access. Second, economic fluctuations, such as recessions or periods of prosperity, have a significant impact on industries. A financial crisis, for instance, can lead to a decrease in spending on goods and services. Similarly, regulatory changes, with the introduction of new laws and regulations, can alter the way industries operate. For example, stricter pollution standards can force companies to adopt more environmentally friendly practices. Finally, social changes, reflecting evolving tastes and habits, influence industries. If environmental awareness grows among consumers, companies will be incentivized to offer more environmentally friendly products.