Apple's restrained AI spending is looking like discipline rather than timidity as rivals' massive data center investments face investor scrutiny.

What happened: While Microsoft, Alphabet, Meta, and Amazon combined to spend more than $400 billion（約64兆円） on capital expenditures in calendar 2025, Apple spent about $12.7 billion（約2兆円） in fiscal 2025. Amazon alone expects capital spending to reach about $200 billion（約32兆円） this year — about 16 times what Apple spent in its most recent fiscal year. Instead, Apple is funding its AI efforts largely through research and development (which totaled $34.6 billion（約5.5兆円） in fiscal 2025 and climbed 33% year over year) and partnerships, such as a reported $1 billion（約1600億円） per year agreement with Alphabet to power Siri with Gemini models.

Why it matters: Tech investors have criticized Apple for lagging on AI while peers poured hundreds of billions into infrastructure. But as stock markets have begun questioning whether those massive spending programs will ever pay off—Oracle fell sharply after announcing plans to raise tens of billions for AI data center expansion—Apple's approach of returning cash to shareholders through a $100 billion（約16兆円） share repurchase and a 4% dividend increase starts to look like financial prudence rather than caution. The company's fiscal second-quarter results showed revenue climbing 17% year over year to $111.2 billion（約18兆円） and earnings per share jumping 22%, driven by over $28 billion（約4.5兆円） in operating cash flow.

What to watch: Investors should monitor how quickly users adopt the revamped Siri once it ships this fall, which may be revealed in management commentary following its release. Sustained double-digit growth in both iPhone and services revenue in upcoming quarterly reports would indicate whether customers are buying into Apple's AI strategy. A key risk remains: Apple's new Siri depends on Alphabet's models rather than technology Apple owns, and if AI assistants become the main way people interact with devices, relying on a direct rival for this critical layer could prove costly.