Elon Musk, newly minted trillionaire after SpaceX IPO, argues money will become irrelevant once AI and robots produce abundance—but his own companies have struggled to deliver on automation promises.

What happened: SpaceX's IPO pushed Musk's net worth above $1.1 trillion（約180兆円） after shares opened at $150 per share, boosting his wealth by about $180 billion（約29兆円） in a single day. In a recent conversation, Musk said that in an AI-powered world where robots serve humans, the output of goods and services will exceed the supply of money, making currency unnecessary.

Why it matters: Musk's vision of a money-less future contrasts sharply with his massive wealth gains, raising questions about how societies actually transition from today's wealth distribution to an AI-driven abundance. Economists like Ioana Marinescu note that the ultrawealthy may resist paying taxes to fund universal income programs that could help workers displaced by automation, even though they stand to benefit most from AI.

What to watch: Tesla aims for 80% of its value to come from humanoid Optimus robots, but the bots have experienced multiple production delays. The gap between Musk's rhetoric about automation and his companies' actual delivery will signal how realistic his post-scarcity timeline is.