I don't really understand the point in these cases specifically. If not Google, the government can always ask a bunch of other companies like utilities or stores about your details. It's a fool's errand to protect your payment info, ID, etc from the government, since it's issued or authorized by them in the first place.

With regard to more important info, treat Google and any other company's software as government-accessible. Don't put anything that could be even suspicious, since even if you can win in court, your time gets wasted by government employees getting paid for it. People keep forgetting it, but the cloud is just someone else's computer.