Companies love a 'rockstar' CEO. Until they depend on one

* Jensen Huang's exit sparks debate on Nvidia's reliance on his leadership. * Concerns focus on Huang's relationships and vision beyond technology. * Article highlights governance risks of 'rockstar CEO' culture. Jensen Huang's sudden departure has shifted focus from Nvidia's technology to whether the company can thrive without him. Analysts question how much Nvidia's dominance stems from Huang's personal relationships and vision rather than its products. Interim CEO Colette Kress and the leadership team are expected to maintain operations, but replacing Huang's influence with suppliers, world leaders, and investors will be difficult. The board's search for a permanent CEO raises broader governance concerns about over-reliance on charismatic leaders and the need for stronger oversight in tech companies.