SoftBank's $50 billion data centre division, SB Energy, has stepped back from its planned public offering as Wall Street's once-fervent enthusiasm for digital infrastructure begins to meet the harder edges of scrutiny. The delay is less a story about one company's timing than a signal that the grand narrative of unstoppable AI-driven growth is being tested against the discipline of finite capital and finite patience. In pulling back, SoftBank acknowledges what markets are quietly insisting: that conviction alone is no longer sufficient collateral for a listing.