To continue being the devil's advocate, with the big system you talked about the bowl with a bunch of wires coming in. I like to look at it more as a bunch of separate bowls. If the government has all its secrets in a bunch of separate bowls, if one of them is penetrated you only get a little part of it. If you have one big system, you have a bigger potential for a cyber effect getting through the entire government system, or a virus.
Also, if a big company is brought down by a lawsuit, for instance.... Once again, if you have the whole Government of Canada shut down, that is a pretty drastic type of thing, whereas if one department is shut down, another department could pick up the slack in that emergency.