Remember that an organization forging a SIN has a bunch of people doing the task - and doing it for several things simultaneously. At the start of the day/week, they have a meeting, or the guy setting the things has a list of items set up that need to be planted. "Sales of Widgets for these five SINS, uses of public toilets for these two," that sort of thing - and the more detailed (and thus higher-rated) the SIN is, the more work they go through, the deeper the SIN's history, the stronger it is, the more it costs and the more time it takes to get it done. The thing that an organization has over John Hacker is that while he has to hack into thirty places to plant data, they have five people who each hack six places to plant the same data, and so get it done faster - and better. And who will plant information for more than just one SIN. Which, of course, your guy can do, but that means he has to do the job of the sixth guy, creating the structure and history of the SIN.