He's not obliged to do anything. He got good PR from the initial commitment, and is now getting bad PR resiling from it. Which seems entirely straightforward.
Op implied Elon's goal is soley to undermine the State Department. I'm arguing none of that matters if at the end of the day, he's providing a capability and service, that has and will continue to lose money for his company. $80 million is no small amount. We also don't know what he asked for behind doors, given the anti elon nature of things these days, what's to say they're not just trying to take advantage of the situation?