Looking at it from a B2B perspective, I can think of a lot of business situations where my own country spying on the data I store is acceptable, while any other country spying on it is not. Any sort of work with your local aerospace/nuclear/etc program falls into this case. Or any sort of work with a biggish company with ties to the power, really.

It's fascinating to see how some people seem to find silly the idea that their domestic government could be on their side.