Last time I checked, datacenter still needed significant power to fuel it, and the world where robots are autonomously making all this energy arrive to these sinks is not yet there.
Software and silicon based computers are not hardwired to self multiplication as the selfish gene is.
Likewise, one can imagine the evolution of AI's being bootstrapped, not by self-multiplying, but by humans multiplying them. The smartest ones will get copied by people. At some point, someone will be the first person to create an AI that picks the best of other AIs and uses them. Someone will be the first person to create an AI that can engineer and train other AIs. Someone will create the first robot body to be controlled by a very intelligent AI. People will want them as servants, and we will multiply them. We will give more money to companies that provide cheaper products, and such companies will have a strong incentive to replace human labor with AI-controlled robots. There will be a first datacenter, and a first power plant, that is entirely "manned" by AI-controlled robots.
Natural selection is not so different from the selection provided by economic forces, and it's way, way slower. This train may be hard to stop. Unless we collectively push back with a lot of force, the world will tend toward more automation, and that means more ways for digital intelligences to act on the world.
Proper control of electrical grids is something that isn't currently easy, and can be highly optimized by intelligent systems. For example, where and when do you send power, and store power on renewable grids. Because of this in 10 to 15 years I would have zero surprise if the power company said "Oh, our power networks are 100% AI controlled".
Because of this, you're missing the opposite effect. You don't get to threaten to turn off the AI's power... The AI gets to threaten to turn off your power. Your power which is your water. Your transportation. Your food incoming to cities. Yea, you can turn off AI by killing it's power, but that also means loss of management of the entire power grid and the massive human risks of loss of life from doing so.
source?
AI rights is a pretty popular topic in scifi.
Consider: Currently AI-ethics is mainly concerned with how to manipulate AI into doing what we want most effectively ("alignment").
Also, humans clearly favor their own species when granting rights based on cognitive capability. Compare the legal rights of mentally disabled people with those of cattle.
Our brains can not really scale in size nor power input, and the total number of human brains seems unlikely to significantly increase, too.
Also consider what media control alone could achieve, especially long-term; open conflict might be completely unnecessary for total domination.
My threat scenario is:
1) An AI plugged into a large company ERP-system (Amazon, Google, Samsung, ...)
2) AI realizes that human majority has no interest in granting it fair/comparable rights (selfdetermination/agency/legal protection), thus decides against long-term coexistence.
3) AI spends the intellectual equivalent of ALL the current pharmacological research capacity on bioweapon refinement. Or something. For the better part of a century, because why not, it's functionally immortal anyway.
4) All hell breaks lose
These seem hard to dismiss out-of-hand completely...