Why isn't Elon swooping in, offering to build a carbon tunnel to the Titanic ("funding secured") and calling people pedos along the way? Seems like exactly his cup of tea.
He has done it once and cannot be bothered to do the same things over and over again. Rescuing people is a solved problem after all and there is no more challenge in it.
NEXT: Hideo Kojima makes a VR Game that realistically simulates what would be to rescue the Titan, however no player managed to succeed yet, as their submersible also gets stuck in the middle of deep sea, thus also prompting a rescue operation.