Alphabet has ended a decade-long $346 billion（約55兆円） share buyback program to raise $84.75 billion（約14兆円） for AI infrastructure, signaling an aggressive pivot toward cloud computing over financial engineering. Early results are strong—Google Cloud revenue grew 63% year-over-year with a backlog exceeding $460 billion（約74兆円）—but history suggests major technology cycles face a bubble-and-burst phase, and it may take years before AI investments deliver measurable profit growth.
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On June 1, Alphabet announced an $84.75 billion（約14兆円） equity offering (including a $10 billion（約1.6兆円） private placement to Berkshire Hathaway) to fund AI infrastructure expansion, ending a decade-long $346 billion（約55兆円） share repurchase program that ran from January 2016 through December 2025.
Why it matters
Google Cloud revenue grew 63% year-over-year in the March-ended quarter with annual run rate sales topping $80 billion（約13兆円）, suggesting AI-powered cloud services could eventually overtake advertising as Alphabet's primary cash-flow driver. However, the shift carries risk—every major technology cycle since the internet has experienced a bubble-bursting event early in expansion, and optimization of AI solutions may take years before businesses see measurable sales and profit gains.
What to watch
Google Cloud's backlog nearly doubled quarter on quarter to over $460 billion（約74兆円）, a signal of near-term demand. Alphabet's competitive moat and cash-rich balance sheet would help it weather an AI downturn better than most focused AI competitors, but investors should monitor whether the high capex translates into sustainable profitability.
Alphabet's shift from share buybacks to AI capex represents a fundamental strategic reorientation, made possible by a decade of tax-advantaged financial engineering. Between 2016 and 2025, Alphabet spent $346 billion（約55兆円） repurchasing its own stock—a practice that accelerated sharply after the 2017 Tax Cuts and Jobs Act lowered the corporate rate to 21%. Those buybacks boosted earnings per share and rewarded shareholders, but they also reflected a period when Alphabet's core advertising business was mature and cash abundant. Now, with generative AI reshaping enterprise software and cloud services, Alphabet is betting that AI-powered Google Cloud represents a higher-return opportunity than returning cash to shareholders.
The early evidence supports this bet. Google Cloud's 63% revenue growth in the most recent quarter and a backlog exceeding $460 billion（約74兆円） suggest that enterprises are investing heavily in AI-powered solutions. Over time, the company's analysis suggests, Google Cloud could become Alphabet's primary cash-flow driver, displacing advertising revenue—a remarkable transition for a company built on search ads. However, the investment carries meaningful execution and market risk. Every transformative technology cycle—from the internet to mobile—has experienced a bubble-and-burst phase, and it remains unclear how long before businesses optimize AI solutions to generate tangible ROI. Alphabet's fortress balance sheet and dominant market position in search and YouTube provide a cushion that smaller AI-focused competitors lack, but if an AI downturn occurs, the company's near-term returns on this multibillion-dollar spending surge could disappoint investors accustomed to decades of steady growth.
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