As far as I know, Waze has their own map data, and is a subsidiary of Google.
Their Wikipedia page mentions that
> Waze continuously insisted to crowdsource data without using external sources or projects like OpenStreetMap that would restrict commercialization of the Waze map data.
> Waze continuously insisted to crowdsource data without using external sources or projects like OpenStreetMap that would restrict commercialization of the Waze map data.