Haven't all the revelations from corporations and government agencies flipped your switch yet? At this point, how would you NOT assume that everyone who can access your data is not benefiting from its use and/or sale? I'd flip the question: is there any organization who has access to your data that isn't mining it to use against you (by targeting you for marketing purposes) and/or selling it to other parties? In fact, I'd go on to say that this activity is now the #2 gross domestic product of the US, right behind "convenience."

No idea, they don't detail what they send.

The difference is that I don't have a freeing of privacy on a cloud (and especially here it's an automated computer program that's doing the reading, it's not that engineers are reading my emails).