In the first five months of this year, the five largest cloud and AI giants issued $159 billion in bonds — 47% more than the same window last year. Some analysts estimate the group's public debt could stack up to $230–$240 billion by year-end. Meanwhile, the credit spreads on those bonds are quietly widening, already stretched to levels that say "the rating ought to be a notch lower." The market's reading is decorous: the giants' balance sheets are healthy, and issuing debt is a mature move — smart use of cheap capital to accelerate the land grab.

But the act of issuing debt says something the keynote never will.