What happened, basically, from memory, is that someone was arguing that Google did something wrong (I forget, but it might have been the collusion to keep down employee wages or something) and so there was discovery of emails by Google, and they eat their own dogfood so it was gmail.
So Google smugly said "hah, there aren't any incriminating emails", but then it turned out that the autosaved drafts of some of their emails were incriminating, and were preserved, and ended up being produced in court.
So remember that the next time you type an email or a forum or facebook post, and you revise it extensively before hitting the button to send it.
Basically, Google relied on an algorithm/search engine to screen for privileged documents instead of having lawyers review things the old-fashioned way and they got bit by that.
The implication being that the courts are corrupt?
If that's the case I think you have way worse things to worry about than "data access", the courts have much greater powers than that.
If the court gave a similar order to retrive similar amounts of physical (eg paper) information from your house, and anyone you happened to correspnd with it would be extremely notable and expensive as well as creating dramatic television pictures. Some of that is a deterrant to its abuse.
"Google, fetch" the scale, ease and speed of that is worrying. How is its abuse to be stopped?
You don’t have to be corrupt to be ineffective. Have you been following patent rulings? Or FISA?