[OSM-legal-talk] Is CC-BY-SA is compatible with ODbL - a philosophical point

[Jukka Rahkonen]

andrzej zaborowski <balrogg at ...> writes:

> That's what I think the plan is.  However it is made very difficult by
> the fact that those data providers most likely chose their SA licenses
> in order to be able to use any improvements made on top of their data,
> which we are planning to very soon make impossible for them.  So we
> now approach them and say "Hello, can you please grant all these..
> perpetual.. irrevocable.. etc. rights to something called OSMF, and by
> the way you won't be able to use OSM data any more because our new
> license is not compatible with yours".

It may be hard to give something back from OSM to many of the data 
providers. Public domain sources like USGS cannot take the updates 
because they are funded for producing public domain data 
(http://lists.openstreetmap.org/pipermail/dev/2010-July/020016.html). 
Ordance Survey can't take updates because it is also selling licenses 
for commercial use. Thus both the European and American mapping agencies 
have one thing in common, they can't accept updates from OSM community 
but they need to build their own community feed back systems.