Ben Affleck gets private demos of OpenAI's video models by calling them up and saying "Hey, it's Ben Affleck. Can I come see what you're doing?" Venture investors pay seven figures in fund commitments for that kind of access. His cost was a phone call and his own name. And there's a reason he's the one celebrity actually using fame this way. He runs Artists Equity, the studio he founded with Matt Damon in 2022 with over $100 million from RedBird Capital. He's the CEO, the one who signs off on…