You cannot just copy and paste things from a public domain data source without first checking the copyright terms and making sure that they're compatible with the OSM license (if they are, you can comment on the revert changeset saying so):

- https://www.openstreetmap.org/copyright

- https://wiki.openstreetmap.org/wiki/Potential_Datasources

In my experience, the satellite imagery available in the OSM editor to trace buildings and paths (which the other commenter was talking about) - and when I want to add shops and other things; a quick survey with some photos - are both more than enough for most things.