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It's often easier to acquire it at least partially, it's not necessarily being greedy as much as not owning the 3rd party data in the first place (but having a license to it).

OSM is more of an all or nothing, everything has to be shared back, so it's hard to be pragmatic and mix different sources some open and some proprietary.

(and not every company wants to run a full fledged geo operation, and those can do it at scale will often end up keeping their data proprietary)

Mixing is hard, using different sources for different sorts of data is likely fine.


You can however, put separate and distinct data layers on top of your map, such as icons showing specialists points of interest, routes, track logs, shaded areas, contours and the like, then Share-Alike does not apply to these elements as long as they do not interact with the map underneath.

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