One thing that seems reasonably possible is to get restaurant recommendations if you built your own app for that. You'd have to tag restaurants you enjoy or fre

One thing that seems reasonably possible is to get restaurant recommendations if you built your own app for that. You'd have to tag restaurants you enjoy or frequent manually, in order to avoid providing location data to Google, but with that input you could rank restaurants in any area by how similar they are to your preferred places. This has some complications anyway because Google Places API, if you rely on that, doesn't provide access to all the tags you see in Google Maps, and you'd have to replace some of that with freeform text search. But stuff like search results? Auto-tagging items/locations in your photos? I was very impressed by the stuff Google Photos can do, but those features obviously rely on some very well-trained neural networks. If there existed a promising "personal platform" solution, I'd happily support it by donating and hopefully code contributions, but I'm not aware of anything much better than Owncloud, which itself isn't dramatically different than using rsync/duplicity in cron jobs.