Most corporations have no problem creating phantom business units to hide profits and losses, inflate executive salaries, etc, etc.
How do we know they aren't doing the same thing with an eye towards creating "disposable" and nearly unconnected entities they can use/abandon/reuse to launch counter-attacks or reconnaissance missions against targets they think are attacking them?
Buy a handful of servers, hire some contractors to install and do basic setup on them in some leased colo space, lather, rinse, repeat a few times and you have a distributed nationwide network, for all intents and purposes disconnected from the parent company and available to launcher counter-attacks, problems, etc.
Screw up, get fingered, have problems? Walk away. Send in different contractors to strike the equipment, box it and ship it off....to another data center, where different contractors can set it up again.
For a Fortune 500 business they could do this with the rounding error in their budget.