Gentoo's Portage build system is (or at least was?) part of Google's ChromeOS

Gentoo also runs the backend infra of Sony's Playstation Cloud gaming service

Anecdotal evidence claims it used to also run the NASDAq

Yep. Gaikai.

I've no idea if Sony uses Gentoo or not, but you can definitely run Gentoo on AWS

Not PSN. Sony's Cloud Gaming service. Where they stream an entire PlayStation console to you

OP's statement matches my understanding; parts were gentoo-based at one point.

Gentoo is often at the forefront of identifying and helping resolve integration issues between different software projects, particularly when it comes to compiler tech (e.g. fixing packages so they can be built properly with LTO, or with LLVM as well as GCC) or other backend-detail-minutia which makes the whole system better without always being visible to the end user.

ChromeOS is based in Gentoo.

Yes, Gentoo is like NixOS, sort of a meta-distribution.

Being the base of ChromeOS makes it highly influential.

ChromeOS market share is >5% in many countries, sometimes around double digits.

Also curious of Gentoo's influence in 2026.