To throw another log into the fire: What about imports?
OSM having a share-alike licence enabled us to incorporate (and otherwise use) all kinds of open data sets, which may be licensed PD/CC0, CC-BY, CC-BY-SA or ODbL. (A lot of open government data in the EU is released under CC-BY or even share-alike.)
If OSM would switch to something more "liberal", we would cut us off from potential source material: If we were going to "CC-BY" our database, we couldn't use CC-BY-SA and ODbL material any more, and if we were going all the way to "CC0", anything other than PD/CC0 would be a no-go.
Martin _______________________________________________ talk mailing list talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk
