Google Cloud customers are paying roughly 50% more than their contracted commitments, a figure Thomas Kurian offered up Thursday as proof that the unit’s 82% year-on-year revenue jump in the second quarter is being driven by actual usage rather than booked-but-unconsumed contracts. The comment, made to CNBC after Alphabet’s better-than-expected quarterly report, is the rare metric that explains both the top-line beat and the market’s skepticism: Alphabet shares dropped more than 7% the same day after the company lifted its 2026 capital expenditure forecast to as much as $205 billion, up from a previous ceiling of $190 billion.
The capex revision is the story that mattered to money. Second-quarter spending already hit $44.9 billion, almost entirely directed at AI infrastructure, and the new range implies a run rate that would make Alphabet the single largest contributor to the roughly $725 billion the megacaps were already expected to burn on AI this year, a total that will climb once Amazon, Microsoft and Meta report next week. Investors who have spent months asking when the payoff arrives got a higher bill instead.
Kurian framed the spending as "very, very disciplined" and argued that renting third-party capacity from providers such as CoreWeave and Nebius, a move that will compress near-term margins, makes sense because it captures customers who subsequently spend more across Google’s portfolio. The logic is circular in the way only platform economics can be: spend more to rent capacity so you can onboard customers who will spend more, justifying the capacity you didn’t have in the first place.
The anecdotal evidence Kurian cited, Macy’s seeing larger shopping baskets, Macquarie Bank cutting processing time, is the kind of proof-point that sounds compelling in a television hit and looks thin in a spreadsheet. No dollar values, no timeframes, no baseline. That is not a criticism of the examples; it is a description of how AI ROI gets marketed while the capex meter runs.
What to watch now is whether the 50% overage holds as a leading indicator or reverts to the mean once the rented capacity comes online and the commitment cycle resets. The next three quarters of megacap earnings will test whether the $725 billion baseline was a floor or a ceiling, and whether the market’s patience for "compounding returns" survives another upward revision.