An interesting classification issue. Original comment contrasted "commercial software" and "open source" so I interpreted it as "paid closed source software" v

An interesting classification issue. Original comment contrasted "commercial software" and "open source" so I interpreted it as "paid closed source software" vs "free open source". But it is not covering all software and in some way Linux can be described as commercial. Still there is plenty of other cases: say editing OpenStreetMap. In theory there is some ArcGis Esri plugin but for good reasons it is used by approximately noone, with everyone using open source software. Though some was also developed by grant-supported developers. Is it making it commercial?