Elon Musk joked that reaching quadrillionaire status would require building factories on both the Moon and Mars. Responding to a social media post noting he remains roughly $998.9 trillion away from becoming the world’s first quadrillionaire, Musk said such a milestone would only be possible through a multi-planetary industrial economy.
Musk added that by that stage, the U.S. dollar would likely no longer serve as the foundation of economic activity. Instead, he argued that mass and energy would become the primary measures of value in an advanced space-based economy. The comments align with his long-standing view that energy is the ultimate economic resource.
The remarks come as Musk continues to promote large-scale space colonization and industrial expansion through SpaceX. Analysts view such statements as part of a broader vision linking future economic growth to energy production, computing power, and extraterrestrial manufacturing.
