In the UK, the Government requires the registration of all businesses serving food, and local councils then inspect them and given them hygiene ratings. The results are published as open data and an OSM mapper has made a tool FHODOT to show matches to OSM data and flag discrepancies.
More generally, various chain stores have websites that list their branches. There’s a project called AllThePlaces that collects the branch data. I’ve made a tool called Chain Reaction that compares these branch lists to OSM store data in the UK. Any discrepancies are shown in my Survey Me tool, which aims to give mappers on the ground things to check out nearby.
There’s other UK-wide datasets of POIs that I’ve also got comparison tools for, and these also feed into Survey Me.