Access comes first. For Google's AI features, a page has to be indexed and able to appear with a snippet, and the site has to be included in Search generative AI features in Search Console. For ChatGPT, OpenAI's crawler documentation says a site that opts out of OAI-SearchBot won't be shown in search answers, though it can still appear as a navigational link.
Blocking a crawler doesn't keep a fact about you out of answers altogether, since the fact can come from another source. The block stops that crawler from fetching your own page.
Then comes how specific the page is. Lean Labs' AEO service page is a useful example of stating facts plainly. It names the buyers it serves, which are B2B startups and scaleups on HubSpot. It lists prices on the page: $9,000 as a one-time setup for the on-site package, and $5,000 a month for ten months for the off-site program.
Those are checkable facts. A reader of that page, human or machine, can tell which platform the service is built for and what it costs without inferring either. That's the kind of detail that lets a page be weighed against a specific request. It isn't a prediction about which agency an engine will name.
First-hand material can help too. Google's guide says a view drawn from your own experience can stand out among the sources its systems read.