Microsoft, Meta, and Google just announced billions more in AI spending. Only Google convinced investors it’s paying off.

Alphabet, Meta, and Microsoft each revealed plans to increase capital expenditures on AI, but the market reaction was starkly different. Alphabet’s parent company saw its stock jump nearly 7% in after-hours trading after CFO Anat Ashkenazi pointed to record revenue and backlog growth in Google Cloud, calling the internal and external demand for AI compute resources “unprecedented.” She also warned that 2027 capex would significantly exceed 2026 levels, yet investors remained bullish because the returns are already visible in Cloud services.

Meta’s stock dropped over 6% after hours, and Microsoft was essentially flat, signaling investor impatience with vague promises of future AI returns. The combined AI-related capex among these three firms is now expected to surpass $600 billion in 2026 alone. The divergence highlights a growing trend: markets are punishing companies that cannot show near-term monetization, while rewarding those with clear, measurable AI revenue streams—a benchmark that so far only Google has convincingly met.