Chrome cookies are encrypted, for exactly the reasons stated. If malware gains access to your system and compromises it in a way that DPAPI calls can be replicated in the way Chrome does it, then your sessions will also be compromised. But this is way harder to do, and at least prevents trivial data exfiltration.
It’s not surprising per se, but it’s something that people should be more aware of. And a lot of this consumption is not providing global services (like the Google search or workspace suite) but the whole AI hype.
I didn’t find numbers for Google or Microsoft specifically, but training ChatGPT 4 consumed 50 GWh on its own. The daily estimates for queries are estimated between 1-5 GWh.
Given that the extrapolation is an overestimate and calculating the actual consumption is pretty much impossible, it’s still probably a lot of energy wasted for a product that people do not want (e.g. Google AI “search”, Bing and Copilot being stuffed into everything).