Title: Silicon Valley weighs AI future after Nvidia CEO Jensen Huang steps down

Jensen Huang's resignation as Nvidia CEO dominated the Cerebral Valley AI Summit, where founders and investors worried about the future of the AI boom without its biggest financial backer. His exit followed reports of extramarital affairs, including one with a woman suspected of spying for China. Nvidia named CFO Colette Kress interim CEO, and attendees expressed concerns about losing Huang's role as a reassuring champion for startups. Nvidia has invested in 42 of the world's 100 most important private AI companies, and leaders compared its influence to banks during the 2008 crisis. While some expected Nvidia's chip lead to endure for years, rivals saw an opening, and startups anticipated exploring alternatives from AMD and Google. Executives worried about short-term instability and the future of Nvidia's support for open-source AI.