Big Tech's AI Capital Spending Finally Delivering Returns

The major cloud platforms are monetizing their 2023-2024 infrastructure investments through margin-accretive AI services. Custom silicon—Amazon's Trainium, Google's TPUs, Microsoft's Maia—captures value that would otherwise flow to Nvidia and improves unit economics. These chips are becoming the competitive advantage, allowing the platforms to prove investors wrong for viewing infrastructure spending as drag on near-term profitability. The shift resets expectations for "AI ROI": not speculative revenue upside, but operating leverage from owned silicon and software integration.