At some point, Moore's law will break down.
Something else has happened with computers.
Thinking of the universe as a computer is controversial.
Another feature that everybody notices about the universe is that it's complex.
Nothing in life is certain except death, taxes and the second law of thermodynamics.
Computers are famous for being able to do complicated things starting from simple programs.
Science consists exactly of those forms of knowledge that can be verified and duplicated by anybody.
Similarly, another famous little quantum fluctuation that programs you is the exact configuration of your DNA.
If you wanted to build the most powerful computer you could, you can't do better than including everything in the universe that's potentially available.
There are considerable advantages to using many degrees of freedom to store information, stability and controllability being perhaps the most important.