Many map sources that are free to us are not truly "free" if someone wants to create an application (with possible monetary gain) from those maps.
Those maps you linked to are free BUT are under CC License (click the link on the bottom left of the page).
[quote='Attribution-Share Alike 2.0 Generic']...Share Alike — If you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one. ...[/quote]
Waze would have to then be under the same CC License and therefore would not be able to change their business model.
Thats what I think at least.
The developers have answered this question a couple of times though. Most free online maps are free to us but not to another company to use.
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