SoftBank Group Chairman Masayoshi Son dismissed Elon Musk's plan to build space-based AI data centers during a recent shareholders meeting [1].

The disagreement highlights a strategic divide between two of the world's most influential tech investors regarding the physical future of artificial intelligence. While Musk looks to orbit to solve energy and heat constraints, Son believes the battle for AI supremacy will be won on the ground.

Son said that space-based data centers offer almost no advantages [3]. He said that the primary benefit touted for such facilities—reduced electricity costs—is a small factor when compared to the massive expense of chips and hardware [3]. Additionally, Son said launch costs, maintenance difficulties, and latency issues are reasons why space-based AI infrastructure is unattractive [2].

Despite his criticism of the concept, Son acknowledged Musk's general influence on technology. Son said that Musk is a leader of remarkable change [3].

SoftBank intends to pivot its focus toward massive terrestrial capacity. The company has pledged U.S.$65 billion in investment to OpenAI [1]. Beyond that specific partnership, Son outlined plans for global data-center infrastructure spending totaling several hundred billion U.S. dollars [1].

Son emphasized that the next few years are the critical window for competition rather than the long-term horizon of a decade from now. He said that chips are more important than electricity costs in the current race [4].

“Space-based data centers have almost no advantages.”

This clash represents a fundamental disagreement over the scaling laws of AI. Musk's vision assumes that terrestrial energy and cooling limits will eventually necessitate a move to space. In contrast, Son's strategy bets that the immediate availability of hardware and the reduction of latency on Earth will provide a decisive competitive advantage in the short term, justifying hundreds of billions in ground-based investment.