Waze was bought 10 years ago, and I think that one went well. They didn't try to integrate it to the whole Google Account thing, but they definitely share data

Waze was bought 10 years ago, and I think that one went well. They didn't try to integrate it to the whole Google Account thing, but they definitely share data between it and Maps (so Waze users get better maps, and Google Maps gets better live traffic information).