Warren Buffett and Charlie Munger created a blueprint for the modern multi-sector, value-driven firm: Acquire strong and often complementary businesses, allocate capital with discipline and patience, and compound growth over a long-time horizon. Today, a new generation of investors is adapting that playbook, building multi-industry platforms with an eye toward exceptional long-term value creation, spanning asset management, technology, real estate, media, sports, philanthropy and much more. How durable are these models? How dependent are they on key decision-makers? Will they come to be viewed as the successors to Berkshire Hathaway, or something different—something even bigger?