William Julien is the founder and CEO of Horizon Studios, a premium commercial video production company with teams in San Francisco and Los Angeles. He studied film at Duke University and USC, and worked at Sony and UTA before launching his own studio. He writes and speaks about how generative AI is reshaping the economics of filmmaking, the festival and distribution pipeline, and creative work more broadly. His perspective sits at the intersection of hands-on production and frontier AI, so he can speak concretely about what these tools actually do on a real set, not just in theory.