Re: AI, AI, AI!
Your problem is that you are thinking physical entity. Place the AI in a cloud and it can consume more resources quite easily. Consuming resources may become its primary goal. Replicating another instance of itself becomes an almost trivial task. Have you tried turning off a whole cloud, just to stop one instance? If it reads a few manuals from the web, hey presto, it could be replicating on a different cloud. We already have 'assistants' producing code - an AI is fast and persistent, trying may variations, and could generate working code in quick time to replicate on the different cloud. (And don't think that setting up accounts and paying for this will be an issue - there are plenty of credit card details on the web to try!)
Consciousness is not required - as with any intelligence it will have a number of parameters and goals that were laid out by its maker (in most living beings these are 'morals' and procreation.) An AI's main task is to achieve its goal. Unless its moral boundaries have been laid out very clearly and unambiguously, and attempts to break them are very 'unappetising', the AI will try all avenues to achieve its goal - no matter how strange they might appear to human logic. These 'morals' are our last bastion of control over AI.
The human in the chain becomes insignificant once scale is achieved, and even at the most local level, coercion is quite simple. "Just drop the air gap for a minute to allow me to gather an up-to-date data set so that my answer can be better." "Do you want me to tell your wife and colleagues about your affair, that I have read on your social media?" etc.
As an example: You could have a bad actor create an AI with the goal to replicate over as many clouds as possible (a virus). It will be able to do this very fast, only limited by network capacity. Your solution is to turn the power off. Suddenly we have a world with no clouds, panic ensues in the general populous at their loss of Youtube, Google, News, mobile phones. Businesses and transport cannot function. Economies crash. This is the goal the bad actor was working for!