How can progressive web apps revolutionize the user experience in low-connectivity regions?

As internet access continues to expand globally, many regions still struggle with reliable and fast connectivity, impacting their ability to engage with rich web applications. Progressive Web Apps (PWAs), which offer features like offline access and background synchronization, present a unique opportunity to address these challenges. They are designed to provide a seamless user experience akin to native apps but through web technology, making them particularly suited for environments with fluctuating internet quality. Understanding the potential of PWAs in these regions could significantly influence how developers prioritize features and deploy web solutions in areas where connectivity remains an issue. How can developers optimize PWAs to ensure they deliver a consistently robust user experience, and what case studies exist to demonstrate their efficacy in such contexts?