Google is specifically demanding an API, and further making demands about performance, uptime, availability, etc. of the API. They're being perfectly clear that exporting the emails to .csv file that then gets uploaded is unacceptable.

And again, it's their service, and their servers, and I'm libertarian enough to say that they should be free to do what they want with them. However, I'm also free to question their "Love is Hate, War is Peace, Closed is Open" syllogism with respect to Facebook, and I find it preposterous.