[awesome_dude]

IANAL, but I would think that Google's customers are overwhelmingly using the service for "legitimate" activities, and Google makes attempts to limit use of their tools in the commission of a crime.

It's kind of like Kim Dotcom's defence of his systems where he was saying that he was making attempts to remove content from his systems in compliance with DCMA requests. That is, the claim is his systems were legal because even though people were using them for illegitimate purposes, he was actively working to prevent that from happening.