Microsoft Shares Face Mounting Challenges Amid AI Expansion and Regulatory Scrutiny

Microsoft's stock is pressured by a Japanese antitrust probe, massive $120B+ AI infrastructure spend, and a shifting dynamic with key partner OpenAI, despite robust quarterly financial results.

Microsoft's stock is navigating a complex landscape of strategic, regulatory, and financial pressures. While the company continues to post strong operational results, investor confidence is being tested by developments surrounding its key AI partnership, escalating antitrust investigations, and the soaring costs of infrastructure expansion.

Regulatory Heat Intensifies with Japanese Antitrust Probe

Adding to the company's challenges, regulatory scrutiny has expanded to Asia. On Wednesday, Japan's Fair Trade Commission conducted a raid on the offices of Microsoft Japan. The investigation centers on whether Azure customers were unfairly restricted from using competing cloud services.

Authorities are examining allegations that Microsoft made certain software services—including Microsoft 365 applications like Teams and Word—less accessible when run on cloud servers outside of Azure. The probe also references pricing practices that have drawn criticism in other regions. Reports suggest Microsoft has offered significant discounts for its own software, such as Windows Server and SQL Server, when deployed on Azure, effectively making operations on rival clouds more expensive. Similar examinations are already underway by competition authorities in the United Kingdom, Brazil, the United States, and the European Union. Microsoft has confirmed it is cooperating with the investigations.

Strong Financial Performance Contrasted with Soaring Capital Expenditure

Operationally, Microsoft's latest quarterly report demonstrates continued strength. Revenue reached $81.3 billion, a 17% year-over-year increase, while operating income climbed 21% to $38.3 billion. The Azure cloud platform grew by 39%, and commercial bookings surged by an impressive 230%. The company's remaining performance obligation (RPO) stands at over $600 billion, signaling substantial long-term enterprise demand.

However, one figure is drawing particular investor attention: quarterly capital expenditure (CapEx) of $37.5 billion. For the full 2026 fiscal year, Microsoft is targeting CapEx of $120 billion or more. This massive outlay is driven by rising demand for GPUs and CPUs, with growth in spending expected to be even higher in 2026 than in 2025.

A significant bottleneck underscores the scale of this demand: an $80 billion Azure backlog currently cannot be fulfilled due to power constraints. This highlights the central dilemma for the market: rapid capacity expansion is essential but comes at a tremendous cost.

OpenAI's Funding Round and the Evolving Partnership Dynamic

Recent headlines were dominated by OpenAI's latest funding round, finalized on February 27, 2026. The AI firm raised $110 billion at a pre-money valuation of $730 billion. Major participants included Amazon ($50 billion), Nvidia ($30 billion), and SoftBank ($30 billion). This influx of capital from other tech giants initially sparked market concerns about a potential dilution of Microsoft's privileged role.

Both companies moved swiftly to address these concerns, issuing a joint statement on the same day. They clarified that the core terms of their partnership remain intact. Microsoft's Azure will continue as the exclusive cloud provider for OpenAI's "stateless" APIs, and Microsoft retains its exclusive licensing and access rights to OpenAI's intellectual property, models, and products.

The statement also acknowledged that OpenAI now has flexibility to secure additional computing capacity elsewhere, particularly for large-scale infrastructure initiatives like the "Stargate" project. This indicates the partnership, while solid, is evolving in its structure.

Market Sentiment and the Path Forward

The cumulative effect of these factors is reflected in the share price. The stock closed at €332.45 on Friday, marking a daily decline of 2.35%. Over the past 30 days, it has fallen 17.64%.

As March 2026 progresses, a critical question will be whether Microsoft can manage its immense infrastructure costs effectively. The goal is to ensure that robust demand growth—evidenced by Azure's performance, major contracts, and a high RPO—is not overshadowed by persistent margin pressure and increasing antitrust proceedings. The company's ability to navigate this balance will be a key determinant of investor sentiment in the coming months.