Where is All the Dark Matter/Energy?

I've been thinking about Dark Matter and Dark Energy, which is to say that I've been speculating possible reasons for why we have no idea where most of the matter and energy in our universe is. Just take a look at this graph:



This pretty much means that 96% of the mass/energy in the universe is not visible to us. Which is sort of confusing. I mean, we can see stars, we can see gas, we can see the rocks and matter all around us, but for some inexplicable reason we are unable to visibly see 80% of all matter, or even observe, let alone harness most of the energy in our universe.

Let me combine this idea with my previous post about a super advanced alien civilization:

For sake of an analogy, pretend we are fish. We are swimming up a river, and bam, out of the blue, we hit this barrier where we can't go upstream anymore. Our fishy senses are confused, because hundreds of thousands of years of evolution have programmed us to want to swim up this stream, but for some reason we are blocked. Something hard and impassible obstructs our way, and we are unable to continue, unable to advance up this river, all because of a dam.

Now imagine a super advanced civilization of aliens. Perhaps these aliens evolved in another universe, somewhere trillions or quadrillions of years in the past from our own universe. Maybe they developed a way to travel through space and time, and even between universes, and they have been skipping between universes, colonizing as they go. Perhaps these technologies require unthinkable amounts of energy, possibly the energy from many stars, from many galaxies, from many universes, all acquired by this supremely powerful species.

(Just like how we have dominated the resources on our own planet, and would absolutely ransack the resources of nearby planets, if we could only figure out a cheap way to get there.)

So imagine this alien species is here already. Perhaps they have already harnessed 95% of the matter/energy in our universe, possibly with a super advanced version of a Dyson Sphere, that blocks all outgoing radiation with a super thin mesh of nano-robot solar panels. They could place these megastructures on any star, at any point in time, at the exact moment of a star's birth, to maximize the efficiency of their consumption.

What if we can't see most of the matter and energy in the universe, for the simple explanation that they are already being harvested by someone else? What if there is a fifth level to the Kardashev scale, where an alien civilization has not only consumed all of the energy of their universe, but has moved on to dominate millions or billions of other universes, including our own?

If this is true, then I would alter the Zoo Hypothesis to something much more humbling, something more fitting of our proper place in the universe:

I'd call it the Fishbowl Hypothesis.