I would imagine a map equivalent of an RSS feed would be nice, although companies like Starbucks and McDonald’s files would probably need to be compressed due to the sheer number of locations.
https://www.alltheplaces.xyz/ scrapes location maps and digests them into consistent line delimited GeoJSON.
The rest is supported by Google Maps and Apple Maps, where businesses can submit their location, hours, etc, and do that ASA matter of course.
The predominant pattern for a customer is to use a (really the) search engine, feed it the name of the business, and see the details in a snippet, or jump to a (really one if two) maps app.
I don't see what would be the upside for Google and Apple to interpret such files, instead of forcing business owners register with their sites, prove identity, contact info, etc, and keep them within their silo along the way :-(
I don’t think Google or Apple are capable of locking in another brand like Home Depot like that though.
In the near future I predict an AI like GPT 3 could interpret unstructured screenshots of websites to answer queries like "what hours are they open"
Though Google canned Duplex just a couple weeks ago: https://www.engadget.com/google-duplex-on-the-web-shutdown-a...
[0] I'm aware that "just" having everyone converge on even a handful of standard formats is, in the real world, a high bar. I do think we could do it - yes, probably by Google applying pressure - but adoption remains Hard.