One of the reasons for not importing "avaliable" data is, if there's a license incompatibility between data source's license and OSM's Open Database License (OD

One of the reasons for not importing "avaliable" data is, if there's a license incompatibility between data source's license and OSM's Open Database License (ODbL). https://wiki.openstreetmap.org/wiki/Import/ODbL_Compatibility https://wiki.openstreetmap.org/wiki/Import/ODbL_Compatibilit...