1. Todd Combs' departure marks a significant leadership change at Berkshire Hathaway. 2. Berkshire is shifting toward a more traditional management structure under Greg Abel. 3. Combs joins JPMorgan to lead a $10 billion investment initiative in the U.S. 4. Greg Abel increases oversight, indicating a shift from the 'Berkshire way'. 5. Analysts express concern over the cultural changes impacting Berkshire's consistency.