The problem: The business case for AI remains untested, and it's unclear whether the revenue from AI products will justify the ever-growing spending. Related stories Business Insider tells the innovative stories you want to know Business Insider tells the innovative stories you want to knowIf it doesn't pay off? "Overinvesting in data center infrastructure risks stranding assets, while underinvesting means falling behind." Like fiber optic cables and the railroads of an earlier era, data center construction and the purchase of GPUs are being financed by Wall Street. Other data center developers are using the securitized bond markets to keep the boom going.