Sundar Pichai issued an internal message after Jeff Dean's departure and Demis Hassabis's role adjustment, reaffirming long-term investment in AI; previously, Google had responded to competition by merging Brain with DeepMind and unifying the Gemini stack. In terms of capital strategy, freeing Hassabis from daily operations to focus on AGI and Isomorphic Labs, while supporting Dean's startup and maintaining collaboration, aims to optimize the allocation of executive attention; resources are shifting from a single leadership model to specialized roles and external ecosystems. Similar cases can be seen in large tech companies stabilizing internal and market expectations through "dynamic moment" narratives during key talent movements; currently, Alphabet is in a phase of generational transition and capability restructuring in AI leadership. This essentially represents a technological substitution: the roles of senior executives are shifting from comprehensive operations to a focus on strategy and science, with the mechanism being to maintain a balance between organizational speed and research depth by redefining responsibilities.