[ledauphin]

I don't think you're wrong...

but I do find this whole discussion strange, because it's rather obviously the same problem that open-source _anything_ has: you're giving something away for free, and it's very hard if not impossible to control how that data gets used or whether the primary benefactors contribute back anything to the source.

Ironically, the only known model of forcing people/corporations to contribute something back based on their usage of something is called "market-based pricing".

Unless someone is proposing that maps are somehow ethically or systematically different, than, say, Linux, this conversation feels rather unspecific and pointless.