2) It's a revolver, it's not all being used
3) If things go great and OpenAI ends up buying smaller guys or getting bought out (probably MSFT?) then JPMC will be right in there with those young bankers who don't sleep. They will pull in many many millions in fees with very little expense.
4) If things don't go great, OpenAI will be looking for more financing. Guess who will help them?
5) It's really only in case there's an Enron things are terrible for JPMC. Like if it turns out the whole thing was a bunch of guys in India answering every ChatGPT query, something like that. If there's actually an AI business, and despite JPMC's history of due diligence misses (Javice case) that's probably the case, then there's deals to be done.