While I agree that DDG should keep it simple, two of the three Google examples you've given -- Gmail and Maps -- are products I rely heavily on, and am glad Google decided to branch out for those two products alone.
I would have listed other, more toxic and/or embarrassingly unsuccessful examples, like:
- Privacy practices - Adsense/Adwords - Search personalization "features" - Docs - Buzz - Jaiku - Wave - etc...