It's a very similar argument to one of the government's excuses for censoring collections of publicly available information -- sure, you COULD find all the stuff you need to build a nuke at the library and the internet and on microfilm, but it's really hard to do. Pulling that data together and selling it as an ebook makes it a much bigger concern.

I'm not saying I agree with the whole "mosaic" definition of things, but I think the point is worth pondering: Sometimes the information itself isn't the point of contention, it's how the information is aggregated.