I felt like you ruled out collision when you said they're not going to murder, though, granted, an accidental but predictable collision after repeatedly refusing orders is not exactly murder. I think the point stands, they have to be willing to kill or to back down, and as others said I'm skeptical France or similar countries would give the order for anything short of an imminent threat regarding the plane's target. If Musk doesn't want to land where they want him to, he's going to pay the pilot whatever it takes, and the fighter jets are going to back off because whatever they want to arrest him for isn't worth an international incident.