How AI answers decide who to name
The assistants that answer with live information do not invent their recommendations from nothing. They run searches, read the pages that come back, and compose an answer from what those pages say, then cite some of them. That makes them more like a very fast researcher than an oracle. A researcher trusts claims that several independent sources agree on, prefers pages that state things plainly, and passes over pages it cannot read.
So GEO is less mysterious than it sounds. It is three jobs: make your own pages easy to read and quote, make sure other sources say the same things about you, and make sure nothing technical stops the crawlers getting in. Most of the work is ordinary, careful SEO aimed at a reader that happens to be a machine.