ESRI is an interesting example. On the one hand they make have some seriously talented cartographers who have made some astonishingly beautiful maps, and surely

ESRI is an interesting example. On the one hand they make have some seriously talented cartographers who have made some astonishingly beautiful maps, and surely they should be able to copyright that work. On the other, they actually do provide quite a lot of things (including access to their tile servers) for free or under permissive licenses. For anyone who wants to look at some pretty maps: http://leaflet-extras.github.io/leaflet-providers/preview/ http://leaflet-extras.github.io/leaflet-providers/preview/