Key Takeaways Citigroup analysts on Tuesday forecast hyperscalers would spend even more on AI infrastructure next year than previously expected. The AI data center buildout is increasingly being financed by debt rather than cash flows, an evolution that exposes the AI boom to new vulnerabilities like default and interest rate risk. Other financing methods, like the investment agreement announced by OpenAI and Nvidia last week, have worried some onlookers fearful of an AI bubble. After a series of ...