They just raised $85 billion and they're sitting on a mountain of cash - if their spending didn't increase in this context, it'd be bad management. The real story here is that they have decided to spend that mountain of cash on AI CapEx.
And then the $85bn to be repaid too.
Also, looks like I got it wrong and they've only raised $45B to date. The rest will come as part of the ATM offering program that begins in Q3.
more details here: https://www.sec.gov/Archives/edgar/data/1652044/000119312526...
https://www.reuters.com/business/alphabet-sells-bonds-worth-...