OSM is great as a map, but the biggest thing keeping me from switching from Google Maps to any OSM solution is the "white pages". My most common use case for a maps app is location-based search.

Having a complete and updated registry of businesses with operating hours is the bare minimum, and OSM apps already struggle with that. I also want pictures of the establishment, pictures of the menu for restaurants, and price estimates for fuel and hotels.

I understand the cost of hosting and moderating that stuff is enormous, but that's what it will take for me to finally convert.