There's a pretty big possibility it comes down to acquisition and cost saving from politicians in charge of the purse strings. I can all but guarantee that the systems administrators and even technical managers had suggested, recommended and all but begged for the resources for a redundant/backup system in a separate physical location were denied because it would double the expense.

This isn't to preclude major ignorance in terms of those in the technology departments themselves. Having worked in/around govt projects a number of times, you will see some "interesting" opinions and positions. Especially around (mis)understanding security.