Artificial intelligence has become the defining investment story of this decade. Nvidia (NASDAQ:NVDA), Microsoft (NASDAQ:MSFT), Alphabet (NASDAQ:GOOG), and a handful of other technology giants are on pace to spend well over $1 trillion building the infrastructure needed to power AI, from advanced semiconductors and data centers to power grids and networking equipment. Wall Street has ... The AI Boom Runs on Debt. Global Regulators Want to Shut Off the Tap