Kushner teamed up with prolific solo investor Elad Gil and Luis Videgaray, the former Mexican foreign minister, to launch Brain Co., a startup that aims to help large businesses and governments apply AI to their operations. By Giacomo Tognini, Monica Hunter-Hart and Iain Martin, Forbes Staff Getty Images T hrive Capital’s Josh Kushner has emerged as one of the most active investors in artificial intelligence, making billion-dollar bets on startups like OpenAI, Databricks and Anduril. Now his bro...