SoftBank CEO: $5 trillion（約800兆円） annually needed for AI infrastructure

Masayoshi Son, who founded SoftBank more than four decades ago, has long positioned himself as a believer in artificial intelligence's transformative potential. Over the years, he has directed tens of billions of dollars toward AI-related companies, cementing SoftBank's role as a major early-stage investor in the sector. Recently, Son has become more vocal about the financial commitments he believes the world must make to sustain AI's growth. He estimates that the global economy needs to spend $5 trillion（約800兆円） annually to meet artificial intelligence demand. In framing this position, Son dismissed criticism of such large-scale investment, suggesting that those who condemn AI spending are themselves taking a losing position. His rhetoric reflects a conviction that massive infrastructure investment in AI is not merely beneficial but necessary for economic competitiveness.

Masayoshi Son's $5 trillion（約800兆円） annual estimate places a concrete figure on what many in the industry see as an inevitable expansion of capital spending on AI infrastructure. As a founder who has backed AI companies for years with tens of billions in investment, Son speaks from a position of direct experience in the sector. His rhetorical stance—equating skepticism about AI spending with futility—signals that he views the debate over whether to invest heavily in AI as already settled. For business leaders and investors, the scale of his estimate underscores why AI infrastructure and capability spending has become a cornerstone of corporate strategy globally.