Major U.S. tech companies, including Microsoft, Meta, Amazon, and Alphabet, are projected to spend over $344 billion on AI infrastructure in 2025, potentially reaching $400 billion with forward-looking estimates, according to Morgan Stanley. Microsoft set a capital expenditure record of $24.2 billion last quarter and anticipates $30 billion this quarter, while Amazon's capex surged to $31.4 billion, nearly double from last year. This surge is fueled by the demand for AI-ready chips and data centers, impacting overall industry growth.