Nvidia CEO Jensen Huang wrote in a blog post Tuesday that decisions about how fast to build AI, who gets access and how to govern it will determine the technology's legacy.Why it matters: Huang — whose company underpins the AI boom — rarely publishes long essays about the tech's broader impact, offering other industry players and investors a rare window into his thinking.The big picture: Huang argues that chip demand, expansion and hiring are still in the early stages of what he calls a long bui...