At the Venice Film Festival, documentarian Alex Gibney has placed the world's most powerful entrepreneur before the oldest of human mirrors: the question of whether great ambition serves humanity or merely serves itself. The film does not arrive as a polemic but as an accumulation of evidence, asking audiences to weigh Musk's stated ideals against the record of his choices. That a major cultural institution would host such a reckoning signals something larger than one man's story — a growing willingness to subject concentrated power to the scrutiny it has long managed to deflect.