Where 'harder' is 'more expensive' and we know that the present newspaper model doesn't look like it can support expensive endeavors. Investigative journalism in the info age is only possible if those practicing it have info age tools.
Well, yes, but "harder" as in "more difficult" too. It's basically impossible to do anything useful with data stored in a paper ledger that's only available in a basement reading room a few hours a day and copies cost $0.15 a page.