The document presents a case study on Amazon, eBay, and Google, highlighting their strategies in unlocking access to their databases for developers and entrepreneurs. Amazon and eBay saw significant benefits from this approach, enhancing their sales and fostering innovation, with Amazon facilitating the development of tools for its sellers and eBay generating new applications. In contrast, Google's cautious approach to database access prioritizes data integrity and security, demonstrating differing strategies among these tech giants.