Big Tech's $700 billion AI infrastructure bet accelerates

Microsoft, Google, Meta, and Amazon are collectively committing roughly $700 billion to AI infrastructure by 2026—a sevenfold increase from current spending. These companies treat computational dominance as essential competitive advantage. This scale of capital deployment will reshape supply chains for semiconductors and data center real estate, create hard constraints on competitors without equivalent balance sheets, and lock in winner-take-most dynamics before AI's actual commercial ROI becomes clear. The bet also reveals management's confidence (or desperation) that current generative AI capabilities justify spending equivalent to the entire annual R&D budgets of most Fortune 500 companies.