Microsoft’s AI Spending Test: Investors Question the Cost of Building the Next Platform

Microsoft shares fell to their lowest level in a year as investors focused on the company’s rising artificial intelligence costs, including a major expansion of data center and computing infrastructure.

The decline came despite continued revenue growth and earnings strength. Microsoft has reported revenue growth between 16% and 18% year over year for eight consecutive quarters, while earnings have exceeded Wall Street expectations, according to investor analysis.

The pressure on the stock has centered on capital spending.

Microsoft spent about $38 billion on capital expenditures in its latest quarter, with much of the investment directed toward AI infrastructure, including data centers and computing capacity. Bank of America estimates Microsoft’s 2026 capital expenditure could approach $190 billion.

The spending reflects Microsoft’s effort to expand Azure capacity and support AI products across its enterprise software business.

Investors Focus on AI Infrastructure Costs

Microsoft has positioned artificial intelligence as a major growth area through Azure, Microsoft 365 Copilot and its broader enterprise software ecosystem.

The company has continued reporting adoption of Copilot, its AI assistant integrated into products including Outlook, Excel, PowerPoint, Teams and GitHub.

Investor Shay Boloor said Microsoft’s existing enterprise footprint could give the company an advantage as businesses adopt AI tools.

“The market is underappreciating that $MSFT already owns the enterprise workflow layer where AI adoption is likely to happen,” Boloor wrote on X.

He pointed to Microsoft’s existing software ecosystem, adding that Copilot had surpassed 20 million paid seats, with paid seat additions increasing and larger enterprise deployments expanding.

The debate among investors has focused on whether Microsoft’s infrastructure spending will translate into future software revenue growth.

Burry Takes Bullish Position

While some investors have questioned Microsoft’s spending levels, others have taken a more optimistic view of the company’s long-term AI position.

Michael Burry, the investor known for his bet against the US housing market before the 2008 financial crisis, opened a bullish position in Microsoft through long-dated call options, according to market tracking accounts.

The options are reportedly set to expire in December 2028.

The position comes as Microsoft shares remain under pressure from concerns over AI investment costs.

AI Demand Raises Hardware Costs

The AI infrastructure boom has also affected Microsoft’s consumer hardware business.

Microsoft announced price increases for Xbox consoles, citing higher costs for storage and memory components.

The company raised prices across several models, including increases of up to $150.

The Kobeissi Letter, an investment research account, highlighted the timing of the move after similar price increases from Apple, writing that “AI-induced price hikes have begun.”

Microsoft said storage and memory costs had increased significantly, contributing to the price adjustments.

The increase reflects broader pressure across the technology supply chain as companies compete for computing components used in AI systems.

The Grey Terminal Note

Microsoft’s AI investment shows how the economics of the technology race are shifting.

The competition is increasingly shaped by access to computing infrastructure, data centers and the supply chains that support them.

The companies building AI platforms are committing capital before the final winners are clear.

The next phase of the market will depend on whether today’s infrastructure spending becomes a lasting advantage or a cost of competing.