Sam Altman and OpenAI are getting serious. They're dropping sidequests like Sora , and trying to catch up to rival Anthropic , which has a booming business selling tools to coders. But OpenAI still wants to make money from people who will never give it a dime. It wants to do that by showing them ads . And this chart from analysts at MoffettNathanson explains why: It's a simple argument, but I'll spell it out here: As of January, OpenAI's ChatGPT had some 900 million users. But the vast majority